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Finding the Fourth Proportional to 330,478.40, 456,060.66 and 187,248.14

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Solution

The fourth proportional to 330,478.40, 456,060.66 and 187,248.14 is: 258,402.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,478.40 : 456,060.66 = 187,248.14 : x
  2. Step 2: Convert to fraction form
    330,478.40/456,060.66 = 187,248.14/x
  3. Step 3: Cross multiply
    330,478.40x = 456,060.66 × 187,248.14
  4. Step 4: Simplify right side
    330,478.40x = 85,396,510,312.17
  5. Step 5: Solve for x
    x = 85,396,510,312.17/330,478.40
  6. Step 6: Final answer
    x = 258,402.70

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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.