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Finding the Fourth Proportional to 659,337.30, 988,677.77 and 209,999.93

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Solution

The fourth proportional to 659,337.30, 988,677.77 and 209,999.93 is: 314,895.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,337.30 : 988,677.77 = 209,999.93 : x
  2. Step 2: Convert to fraction form
    659,337.30/988,677.77 = 209,999.93/x
  3. Step 3: Cross multiply
    659,337.30x = 988,677.77 × 209,999.93
  4. Step 4: Simplify right side
    659,337.30x = 207,622,256,499.17
  5. Step 5: Solve for x
    x = 207,622,256,499.17/659,337.30
  6. Step 6: Final answer
    x = 314,895.36

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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.