Home / 230,397.24-317,909.52-128,400.30

Finding the Fourth Proportional to 230,397.24, 317,909.52 and 128,400.30

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Solution

The fourth proportional to 230,397.24, 317,909.52 and 128,400.30 is: 177,170.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,397.24 : 317,909.52 = 128,400.30 : x
  2. Step 2: Convert to fraction form
    230,397.24/317,909.52 = 128,400.30/x
  3. Step 3: Cross multiply
    230,397.24x = 317,909.52 × 128,400.30
  4. Step 4: Simplify right side
    230,397.24x = 40,819,677,740.86
  5. Step 5: Solve for x
    x = 40,819,677,740.86/230,397.24
  6. Step 6: Final answer
    x = 177,170.86

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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.