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Finding the Fourth Proportional to 340,129.60, 510,248.40 and 115,511.20

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Solution

The fourth proportional to 340,129.60, 510,248.40 and 115,511.20 is: 173,285.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,129.60 : 510,248.40 = 115,511.20 : x
  2. Step 2: Convert to fraction form
    340,129.60/510,248.40 = 115,511.20/x
  3. Step 3: Cross multiply
    340,129.60x = 510,248.40 × 115,511.20
  4. Step 4: Simplify right side
    340,129.60x = 58,939,404,982.08
  5. Step 5: Solve for x
    x = 58,939,404,982.08/340,129.60
  6. Step 6: Final answer
    x = 173,285.14

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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.