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Finding the Fourth Proportional to 486,000.40, 728,417.40 and 249,221.20

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Solution

The fourth proportional to 486,000.40, 728,417.40 and 249,221.20 is: 373,532.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,000.40 : 728,417.40 = 249,221.20 : x
  2. Step 2: Convert to fraction form
    486,000.40/728,417.40 = 249,221.20/x
  3. Step 3: Cross multiply
    486,000.40x = 728,417.40 × 249,221.20
  4. Step 4: Simplify right side
    486,000.40x = 181,537,058,528.88
  5. Step 5: Solve for x
    x = 181,537,058,528.88/486,000.40
  6. Step 6: Final answer
    x = 373,532.73

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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.