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Finding the Fourth Proportional to 330,394.60, 455,929.88 and 187,151.76

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Solution

The fourth proportional to 330,394.60, 455,929.88 and 187,151.76 is: 258,261.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,394.60 : 455,929.88 = 187,151.76 : x
  2. Step 2: Convert to fraction form
    330,394.60/455,929.88 = 187,151.76/x
  3. Step 3: Cross multiply
    330,394.60x = 455,929.88 × 187,151.76
  4. Step 4: Simplify right side
    330,394.60x = 85,328,079,478.59
  5. Step 5: Solve for x
    x = 85,328,079,478.59/330,394.60
  6. Step 6: Final answer
    x = 258,261.12

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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.