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Finding the Fourth Proportional to 402,387.32, 555,342.82 and 241,331.08

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Solution

The fourth proportional to 402,387.32, 555,342.82 and 241,331.08 is: 333,065.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,387.32 : 555,342.82 = 241,331.08 : x
  2. Step 2: Convert to fraction form
    402,387.32/555,342.82 = 241,331.08/x
  3. Step 3: Cross multiply
    402,387.32x = 555,342.82 × 241,331.08
  4. Step 4: Simplify right side
    402,387.32x = 134,021,482,520.85
  5. Step 5: Solve for x
    x = 134,021,482,520.85/402,387.32
  6. Step 6: Final answer
    x = 333,065.87

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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.