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Finding the Fourth Proportional to 372,012.10, 558,018.15 and 260,037.70

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Solution

The fourth proportional to 372,012.10, 558,018.15 and 260,037.70 is: 390,056.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,012.10 : 558,018.15 = 260,037.70 : x
  2. Step 2: Convert to fraction form
    372,012.10/558,018.15 = 260,037.70/x
  3. Step 3: Cross multiply
    372,012.10x = 558,018.15 × 260,037.70
  4. Step 4: Simplify right side
    372,012.10x = 145,105,756,284.26
  5. Step 5: Solve for x
    x = 145,105,756,284.26/372,012.10
  6. Step 6: Final answer
    x = 390,056.55

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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.