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Finding the Fourth Proportional to 340,278.72, 510,491.88 and 103,615.20

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Solution

The fourth proportional to 340,278.72, 510,491.88 and 103,615.20 is: 155,445.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,278.72 : 510,491.88 = 103,615.20 : x
  2. Step 2: Convert to fraction form
    340,278.72/510,491.88 = 103,615.20/x
  3. Step 3: Cross multiply
    340,278.72x = 510,491.88 × 103,615.20
  4. Step 4: Simplify right side
    340,278.72x = 52,894,718,244.58
  5. Step 5: Solve for x
    x = 52,894,718,244.58/340,278.72
  6. Step 6: Final answer
    x = 155,445.27

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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.