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Finding the Fourth Proportional to 425,699.12, 638,545.44 and 176,381.12

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Solution

The fourth proportional to 425,699.12, 638,545.44 and 176,381.12 is: 264,570.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,699.12 : 638,545.44 = 176,381.12 : x
  2. Step 2: Convert to fraction form
    425,699.12/638,545.44 = 176,381.12/x
  3. Step 3: Cross multiply
    425,699.12x = 638,545.44 × 176,381.12
  4. Step 4: Simplify right side
    425,699.12x = 112,627,359,878.09
  5. Step 5: Solve for x
    x = 112,627,359,878.09/425,699.12
  6. Step 6: Final answer
    x = 264,570.34

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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.