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Finding the Fourth Proportional to 400,434.60, 552,545.20 and 239,255.60

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Solution

The fourth proportional to 400,434.60, 552,545.20 and 239,255.60 is: 330,140.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,434.60 : 552,545.20 = 239,255.60 : x
  2. Step 2: Convert to fraction form
    400,434.60/552,545.20 = 239,255.60/x
  3. Step 3: Cross multiply
    400,434.60x = 552,545.20 × 239,255.60
  4. Step 4: Simplify right side
    400,434.60x = 132,199,533,353.12
  5. Step 5: Solve for x
    x = 132,199,533,353.12/400,434.60
  6. Step 6: Final answer
    x = 330,140.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.