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Finding the Fourth Proportional to 559,757.61, 839,139.29 and 218,121.93

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Solution

The fourth proportional to 559,757.61, 839,139.29 and 218,121.93 is: 326,989.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,757.61 : 839,139.29 = 218,121.93 : x
  2. Step 2: Convert to fraction form
    559,757.61/839,139.29 = 218,121.93/x
  3. Step 3: Cross multiply
    559,757.61x = 839,139.29 × 218,121.93
  4. Step 4: Simplify right side
    559,757.61x = 183,034,680,383.02
  5. Step 5: Solve for x
    x = 183,034,680,383.02/559,757.61
  6. Step 6: Final answer
    x = 326,989.18

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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.