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Finding the Fourth Proportional to 296,898.30, 445,347.45 and 86,543.10

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Solution

The fourth proportional to 296,898.30, 445,347.45 and 86,543.10 is: 129,814.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,898.30 : 445,347.45 = 86,543.10 : x
  2. Step 2: Convert to fraction form
    296,898.30/445,347.45 = 86,543.10/x
  3. Step 3: Cross multiply
    296,898.30x = 445,347.45 × 86,543.10
  4. Step 4: Simplify right side
    296,898.30x = 38,541,748,900.10
  5. Step 5: Solve for x
    x = 38,541,748,900.10/296,898.30
  6. Step 6: Final answer
    x = 129,814.65

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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.