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Finding the Fourth Proportional to 207,266.60, 310,746.30 and 140,540.20

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Solution

The fourth proportional to 207,266.60, 310,746.30 and 140,540.20 is: 210,706.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,266.60 : 310,746.30 = 140,540.20 : x
  2. Step 2: Convert to fraction form
    207,266.60/310,746.30 = 140,540.20/x
  3. Step 3: Cross multiply
    207,266.60x = 310,746.30 × 140,540.20
  4. Step 4: Simplify right side
    207,266.60x = 43,672,347,151.26
  5. Step 5: Solve for x
    x = 43,672,347,151.26/207,266.60
  6. Step 6: Final answer
    x = 210,706.15

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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.