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Finding the Fourth Proportional to 518,280.21, 777,646.20 and 181,562.40

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Solution

The fourth proportional to 518,280.21, 777,646.20 and 181,562.40 is: 272,422.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,280.21 : 777,646.20 = 181,562.40 : x
  2. Step 2: Convert to fraction form
    518,280.21/777,646.20 = 181,562.40/x
  3. Step 3: Cross multiply
    518,280.21x = 777,646.20 × 181,562.40
  4. Step 4: Simplify right side
    518,280.21x = 141,191,310,422.88
  5. Step 5: Solve for x
    x = 141,191,310,422.88/518,280.21
  6. Step 6: Final answer
    x = 272,422.73

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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.