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Finding the Fourth Proportional to 340,128.60, 510,246.90 and 115,510.20

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Solution

The fourth proportional to 340,128.60, 510,246.90 and 115,510.20 is: 173,283.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,128.60 : 510,246.90 = 115,510.20 : x
  2. Step 2: Convert to fraction form
    340,128.60/510,246.90 = 115,510.20/x
  3. Step 3: Cross multiply
    340,128.60x = 510,246.90 × 115,510.20
  4. Step 4: Simplify right side
    340,128.60x = 58,938,721,468.38
  5. Step 5: Solve for x
    x = 58,938,721,468.38/340,128.60
  6. Step 6: Final answer
    x = 173,283.64

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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.