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Finding the Fourth Proportional to 348,726.70, 522,960.45 and 138,321.10

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Solution

The fourth proportional to 348,726.70, 522,960.45 and 138,321.10 is: 207,430.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,726.70 : 522,960.45 = 138,321.10 : x
  2. Step 2: Convert to fraction form
    348,726.70/522,960.45 = 138,321.10/x
  3. Step 3: Cross multiply
    348,726.70x = 522,960.45 × 138,321.10
  4. Step 4: Simplify right side
    348,726.70x = 72,336,464,700.50
  5. Step 5: Solve for x
    x = 72,336,464,700.50/348,726.70
  6. Step 6: Final answer
    x = 207,430.24

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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.