Home / 257,630.40-386,265.60-152,395.20

Finding the Fourth Proportional to 257,630.40, 386,265.60 and 152,395.20

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Solution

The fourth proportional to 257,630.40, 386,265.60 and 152,395.20 is: 228,486.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,630.40 : 386,265.60 = 152,395.20 : x
  2. Step 2: Convert to fraction form
    257,630.40/386,265.60 = 152,395.20/x
  3. Step 3: Cross multiply
    257,630.40x = 386,265.60 × 152,395.20
  4. Step 4: Simplify right side
    257,630.40x = 58,865,023,365.12
  5. Step 5: Solve for x
    x = 58,865,023,365.12/257,630.40
  6. Step 6: Final answer
    x = 228,486.33

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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.