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Finding the Fourth Proportional to 518,487.40, 777,731.10 and 144,510.40

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Solution

The fourth proportional to 518,487.40, 777,731.10 and 144,510.40 is: 216,765.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,487.40 : 777,731.10 = 144,510.40 : x
  2. Step 2: Convert to fraction form
    518,487.40/777,731.10 = 144,510.40/x
  3. Step 3: Cross multiply
    518,487.40x = 777,731.10 × 144,510.40
  4. Step 4: Simplify right side
    518,487.40x = 112,390,232,353.44
  5. Step 5: Solve for x
    x = 112,390,232,353.44/518,487.40
  6. Step 6: Final answer
    x = 216,765.60

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Similar ratio
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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.