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Finding the Fourth Proportional to 472,087.31, 651,480.57 and 257,227.40

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Solution

The fourth proportional to 472,087.31, 651,480.57 and 257,227.40 is: 354,973.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,087.31 : 651,480.57 = 257,227.40 : x
  2. Step 2: Convert to fraction form
    472,087.31/651,480.57 = 257,227.40/x
  3. Step 3: Cross multiply
    472,087.31x = 651,480.57 × 257,227.40
  4. Step 4: Simplify right side
    472,087.31x = 167,578,654,800.32
  5. Step 5: Solve for x
    x = 167,578,654,800.32/472,087.31
  6. Step 6: Final answer
    x = 354,973.86

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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.