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Finding the Fourth Proportional to 487,881.80, 731,822.70 and 251,145.80

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Solution

The fourth proportional to 487,881.80, 731,822.70 and 251,145.80 is: 376,718.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,881.80 : 731,822.70 = 251,145.80 : x
  2. Step 2: Convert to fraction form
    487,881.80/731,822.70 = 251,145.80/x
  3. Step 3: Cross multiply
    487,881.80x = 731,822.70 × 251,145.80
  4. Step 4: Simplify right side
    487,881.80x = 183,794,197,449.66
  5. Step 5: Solve for x
    x = 183,794,197,449.66/487,881.80
  6. Step 6: Final answer
    x = 376,718.70

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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.