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Finding the Fourth Proportional to 578,423.69, 867,609.98 and 157,699.61

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Solution

The fourth proportional to 578,423.69, 867,609.98 and 157,699.61 is: 236,542.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,423.69 : 867,609.98 = 157,699.61 : x
  2. Step 2: Convert to fraction form
    578,423.69/867,609.98 = 157,699.61/x
  3. Step 3: Cross multiply
    578,423.69x = 867,609.98 × 157,699.61
  4. Step 4: Simplify right side
    578,423.69x = 136,821,754,689.61
  5. Step 5: Solve for x
    x = 136,821,754,689.61/578,423.69
  6. Step 6: Final answer
    x = 236,542.45

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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.