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Finding the Fourth Proportional to 261,579.96, 392,332.50 and 84,063.60

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Solution

The fourth proportional to 261,579.96, 392,332.50 and 84,063.60 is: 126,083.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,579.96 : 392,332.50 = 84,063.60 : x
  2. Step 2: Convert to fraction form
    261,579.96/392,332.50 = 84,063.60/x
  3. Step 3: Cross multiply
    261,579.96x = 392,332.50 × 84,063.60
  4. Step 4: Simplify right side
    261,579.96x = 32,980,882,347.00
  5. Step 5: Solve for x
    x = 32,980,882,347.00/261,579.96
  6. Step 6: Final answer
    x = 126,083.37

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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.