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Finding the Fourth Proportional to 472,260.62, 651,720.15 and 257,400.86

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Solution

The fourth proportional to 472,260.62, 651,720.15 and 257,400.86 is: 355,213.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,260.62 : 651,720.15 = 257,400.86 : x
  2. Step 2: Convert to fraction form
    472,260.62/651,720.15 = 257,400.86/x
  3. Step 3: Cross multiply
    472,260.62x = 651,720.15 × 257,400.86
  4. Step 4: Simplify right side
    472,260.62x = 167,753,327,089.33
  5. Step 5: Solve for x
    x = 167,753,327,089.33/472,260.62
  6. Step 6: Final answer
    x = 355,213.46

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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.