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Finding the Fourth Proportional to 457,153.60, 685,730.40 and 297,721.30

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Solution

The fourth proportional to 457,153.60, 685,730.40 and 297,721.30 is: 446,581.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,153.60 : 685,730.40 = 297,721.30 : x
  2. Step 2: Convert to fraction form
    457,153.60/685,730.40 = 297,721.30/x
  3. Step 3: Cross multiply
    457,153.60x = 685,730.40 × 297,721.30
  4. Step 4: Simplify right side
    457,153.60x = 204,156,546,137.52
  5. Step 5: Solve for x
    x = 204,156,546,137.52/457,153.60
  6. Step 6: Final answer
    x = 446,581.95

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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.