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Finding the Fourth Proportional to 425,235.96, 637,877.22 and 172,478.92

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Solution

The fourth proportional to 425,235.96, 637,877.22 and 172,478.92 is: 258,727.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,235.96 : 637,877.22 = 172,478.92 : x
  2. Step 2: Convert to fraction form
    425,235.96/637,877.22 = 172,478.92/x
  3. Step 3: Cross multiply
    425,235.96x = 637,877.22 × 172,478.92
  4. Step 4: Simplify right side
    425,235.96x = 110,020,373,998.20
  5. Step 5: Solve for x
    x = 110,020,373,998.20/425,235.96
  6. Step 6: Final answer
    x = 258,727.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.