Home / 230,485.32-318,073.14-128,507.76

Finding the Fourth Proportional to 230,485.32, 318,073.14 and 128,507.76

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Solution

The fourth proportional to 230,485.32, 318,073.14 and 128,507.76 is: 177,342.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,485.32 : 318,073.14 = 128,507.76 : x
  2. Step 2: Convert to fraction form
    230,485.32/318,073.14 = 128,507.76/x
  3. Step 3: Cross multiply
    230,485.32x = 318,073.14 × 128,507.76
  4. Step 4: Simplify right side
    230,485.32x = 40,874,866,737.57
  5. Step 5: Solve for x
    x = 40,874,866,737.57/230,485.32
  6. Step 6: Final answer
    x = 177,342.60

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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.