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Finding the Fourth Proportional to 387,331.72, 534,498.40 and 234,403.72

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Solution

The fourth proportional to 387,331.72, 534,498.40 and 234,403.72 is: 323,465.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,331.72 : 534,498.40 = 234,403.72 : x
  2. Step 2: Convert to fraction form
    387,331.72/534,498.40 = 234,403.72/x
  3. Step 3: Cross multiply
    387,331.72x = 534,498.40 × 234,403.72
  4. Step 4: Simplify right side
    387,331.72x = 125,288,413,294.05
  5. Step 5: Solve for x
    x = 125,288,413,294.05/387,331.72
  6. Step 6: Final answer
    x = 323,465.41

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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.