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Finding the Fourth Proportional to 370,012.10, 555,018.15 and 314,899.70

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Solution

The fourth proportional to 370,012.10, 555,018.15 and 314,899.70 is: 472,349.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,012.10 : 555,018.15 = 314,899.70 : x
  2. Step 2: Convert to fraction form
    370,012.10/555,018.15 = 314,899.70/x
  3. Step 3: Cross multiply
    370,012.10x = 555,018.15 × 314,899.70
  4. Step 4: Simplify right side
    370,012.10x = 174,775,048,929.56
  5. Step 5: Solve for x
    x = 174,775,048,929.56/370,012.10
  6. Step 6: Final answer
    x = 472,349.55

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.