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Finding the Fourth Proportional to 659,854.86, 989,781.93 and 239,130.06

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Solution

The fourth proportional to 659,854.86, 989,781.93 and 239,130.06 is: 358,694.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,854.86 : 989,781.93 = 239,130.06 : x
  2. Step 2: Convert to fraction form
    659,854.86/989,781.93 = 239,130.06/x
  3. Step 3: Cross multiply
    659,854.86x = 989,781.93 × 239,130.06
  4. Step 4: Simplify right side
    659,854.86x = 236,686,612,307.82
  5. Step 5: Solve for x
    x = 236,686,612,307.82/659,854.86
  6. Step 6: Final answer
    x = 358,694.96

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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.