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Finding the Fourth Proportional to 586,539.92, 879,802.20 and 143,311.76

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Solution

The fourth proportional to 586,539.92, 879,802.20 and 143,311.76 is: 214,965.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,539.92 : 879,802.20 = 143,311.76 : x
  2. Step 2: Convert to fraction form
    586,539.92/879,802.20 = 143,311.76/x
  3. Step 3: Cross multiply
    586,539.92x = 879,802.20 × 143,311.76
  4. Step 4: Simplify right side
    586,539.92x = 126,086,001,733.87
  5. Step 5: Solve for x
    x = 126,086,001,733.87/586,539.92
  6. Step 6: Final answer
    x = 214,965.76

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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.