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Finding the Fourth Proportional to 370,412.36, 555,268.14 and 133,691.72

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Solution

The fourth proportional to 370,412.36, 555,268.14 and 133,691.72 is: 200,411.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,412.36 : 555,268.14 = 133,691.72 : x
  2. Step 2: Convert to fraction form
    370,412.36/555,268.14 = 133,691.72/x
  3. Step 3: Cross multiply
    370,412.36x = 555,268.14 × 133,691.72
  4. Step 4: Simplify right side
    370,412.36x = 74,234,752,697.80
  5. Step 5: Solve for x
    x = 74,234,752,697.80/370,412.36
  6. Step 6: Final answer
    x = 200,411.11

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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.