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Finding the Fourth Proportional to 486,650.40, 729,742.32 and 249,871.20

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Solution

The fourth proportional to 486,650.40, 729,742.32 and 249,871.20 is: 374,687.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,650.40 : 729,742.32 = 249,871.20 : x
  2. Step 2: Convert to fraction form
    486,650.40/729,742.32 = 249,871.20/x
  3. Step 3: Cross multiply
    486,650.40x = 729,742.32 × 249,871.20
  4. Step 4: Simplify right side
    486,650.40x = 182,341,589,189.18
  5. Step 5: Solve for x
    x = 182,341,589,189.18/486,650.40
  6. Step 6: Final answer
    x = 374,687.02

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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.