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Finding the Fourth Proportional to 339,061.80, 508,643.76 and 102,423.60

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Solution

The fourth proportional to 339,061.80, 508,643.76 and 102,423.60 is: 153,650.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,061.80 : 508,643.76 = 102,423.60 : x
  2. Step 2: Convert to fraction form
    339,061.80/508,643.76 = 102,423.60/x
  3. Step 3: Cross multiply
    339,061.80x = 508,643.76 × 102,423.60
  4. Step 4: Simplify right side
    339,061.80x = 52,097,125,016.74
  5. Step 5: Solve for x
    x = 52,097,125,016.74/339,061.80
  6. Step 6: Final answer
    x = 153,650.82

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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.