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Finding the Fourth Proportional to 515,201.80, 772,442.70 and 304,731.40

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Solution

The fourth proportional to 515,201.80, 772,442.70 and 304,731.40 is: 456,884.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,201.80 : 772,442.70 = 304,731.40 : x
  2. Step 2: Convert to fraction form
    515,201.80/772,442.70 = 304,731.40/x
  3. Step 3: Cross multiply
    515,201.80x = 772,442.70 × 304,731.40
  4. Step 4: Simplify right side
    515,201.80x = 235,387,545,390.78
  5. Step 5: Solve for x
    x = 235,387,545,390.78/515,201.80
  6. Step 6: Final answer
    x = 456,884.17

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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.