Home / 442,442.80-663,664.20-126,931.60

Finding the Fourth Proportional to 442,442.80, 663,664.20 and 126,931.60

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Solution

The fourth proportional to 442,442.80, 663,664.20 and 126,931.60 is: 190,397.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,442.80 : 663,664.20 = 126,931.60 : x
  2. Step 2: Convert to fraction form
    442,442.80/663,664.20 = 126,931.60/x
  3. Step 3: Cross multiply
    442,442.80x = 663,664.20 × 126,931.60
  4. Step 4: Simplify right side
    442,442.80x = 84,239,958,768.72
  5. Step 5: Solve for x
    x = 84,239,958,768.72/442,442.80
  6. Step 6: Final answer
    x = 190,397.40

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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.