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Finding the Fourth Proportional to 515,084.84, 772,839.84 and 278,148.52

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Solution

The fourth proportional to 515,084.84, 772,839.84 and 278,148.52 is: 417,337.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,084.84 : 772,839.84 = 278,148.52 : x
  2. Step 2: Convert to fraction form
    515,084.84/772,839.84 = 278,148.52/x
  3. Step 3: Cross multiply
    515,084.84x = 772,839.84 × 278,148.52
  4. Step 4: Simplify right side
    515,084.84x = 214,964,257,693.04
  5. Step 5: Solve for x
    x = 214,964,257,693.04/515,084.84
  6. Step 6: Final answer
    x = 417,337.57

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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.