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Finding the Fourth Proportional to 230,528.40, 318,130.59 and 128,560.32

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Solution

The fourth proportional to 230,528.40, 318,130.59 and 128,560.32 is: 177,414.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,528.40 : 318,130.59 = 128,560.32 : x
  2. Step 2: Convert to fraction form
    230,528.40/318,130.59 = 128,560.32/x
  3. Step 3: Cross multiply
    230,528.40x = 318,130.59 × 128,560.32
  4. Step 4: Simplify right side
    230,528.40x = 40,898,970,452.19
  5. Step 5: Solve for x
    x = 40,898,970,452.19/230,528.40
  6. Step 6: Final answer
    x = 177,414.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.