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Finding the Fourth Proportional to 659,168.35, 988,425.38 and 209,830.77

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Solution

The fourth proportional to 659,168.35, 988,425.38 and 209,830.77 is: 314,642.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,168.35 : 988,425.38 = 209,830.77 : x
  2. Step 2: Convert to fraction form
    659,168.35/988,425.38 = 209,830.77/x
  3. Step 3: Cross multiply
    659,168.35x = 988,425.38 × 209,830.77
  4. Step 4: Simplify right side
    659,168.35x = 207,402,059,097.52
  5. Step 5: Solve for x
    x = 207,402,059,097.52/659,168.35
  6. Step 6: Final answer
    x = 314,642.02

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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.