Home / 261,948.60-393,117.30-104,290.20

Finding the Fourth Proportional to 261,948.60, 393,117.30 and 104,290.20

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Solution

The fourth proportional to 261,948.60, 393,117.30 and 104,290.20 is: 156,512.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,948.60 : 393,117.30 = 104,290.20 : x
  2. Step 2: Convert to fraction form
    261,948.60/393,117.30 = 104,290.20/x
  3. Step 3: Cross multiply
    261,948.60x = 393,117.30 × 104,290.20
  4. Step 4: Simplify right side
    261,948.60x = 40,998,281,840.46
  5. Step 5: Solve for x
    x = 40,998,281,840.46/261,948.60
  6. Step 6: Final answer
    x = 156,512.70

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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.