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Finding the Fourth Proportional to 262,001.70, 393,002.55 and 75,013.20

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Solution

The fourth proportional to 262,001.70, 393,002.55 and 75,013.20 is: 112,519.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,001.70 : 393,002.55 = 75,013.20 : x
  2. Step 2: Convert to fraction form
    262,001.70/393,002.55 = 75,013.20/x
  3. Step 3: Cross multiply
    262,001.70x = 393,002.55 × 75,013.20
  4. Step 4: Simplify right side
    262,001.70x = 29,480,378,883.66
  5. Step 5: Solve for x
    x = 29,480,378,883.66/262,001.70
  6. Step 6: Final answer
    x = 112,519.80

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1.5x scale

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.