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Finding the Fourth Proportional to 425,234.96, 637,875.72 and 172,477.92

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Solution

The fourth proportional to 425,234.96, 637,875.72 and 172,477.92 is: 258,726.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,234.96 : 637,875.72 = 172,477.92 : x
  2. Step 2: Convert to fraction form
    425,234.96/637,875.72 = 172,477.92/x
  3. Step 3: Cross multiply
    425,234.96x = 637,875.72 × 172,477.92
  4. Step 4: Simplify right side
    425,234.96x = 110,019,477,404.10
  5. Step 5: Solve for x
    x = 110,019,477,404.10/425,234.96
  6. Step 6: Final answer
    x = 258,726.32

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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.