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Finding the Fourth Proportional to 559,133.87, 838,700.80 and 138,409.74

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Solution

The fourth proportional to 559,133.87, 838,700.80 and 138,409.74 is: 207,614.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,133.87 : 838,700.80 = 138,409.74 : x
  2. Step 2: Convert to fraction form
    559,133.87/838,700.80 = 138,409.74/x
  3. Step 3: Cross multiply
    559,133.87x = 838,700.80 × 138,409.74
  4. Step 4: Simplify right side
    559,133.87x = 116,084,359,319.77
  5. Step 5: Solve for x
    x = 116,084,359,319.77/559,133.87
  6. Step 6: Final answer
    x = 207,614.61

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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.