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Finding the Fourth Proportional to 207,130.60, 310,695.90 and 171,701.20

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Solution

The fourth proportional to 207,130.60, 310,695.90 and 171,701.20 is: 257,551.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,130.60 : 310,695.90 = 171,701.20 : x
  2. Step 2: Convert to fraction form
    207,130.60/310,695.90 = 171,701.20/x
  3. Step 3: Cross multiply
    207,130.60x = 310,695.90 × 171,701.20
  4. Step 4: Simplify right side
    207,130.60x = 53,346,858,865.08
  5. Step 5: Solve for x
    x = 53,346,858,865.08/207,130.60
  6. Step 6: Final answer
    x = 257,551.80

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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.