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Finding the Fourth Proportional to 207,122.60, 310,683.90 and 171,693.20

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Solution

The fourth proportional to 207,122.60, 310,683.90 and 171,693.20 is: 257,539.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,122.60 : 310,683.90 = 171,693.20 : x
  2. Step 2: Convert to fraction form
    207,122.60/310,683.90 = 171,693.20/x
  3. Step 3: Cross multiply
    207,122.60x = 310,683.90 × 171,693.20
  4. Step 4: Simplify right side
    207,122.60x = 53,342,312,979.48
  5. Step 5: Solve for x
    x = 53,342,312,979.48/207,122.60
  6. Step 6: Final answer
    x = 257,539.80

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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.