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Finding the Fourth Proportional to 486,194.40, 728,708.40 and 249,415.20

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Solution

The fourth proportional to 486,194.40, 728,708.40 and 249,415.20 is: 373,823.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,194.40 : 728,708.40 = 249,415.20 : x
  2. Step 2: Convert to fraction form
    486,194.40/728,708.40 = 249,415.20/x
  3. Step 3: Cross multiply
    486,194.40x = 728,708.40 × 249,415.20
  4. Step 4: Simplify right side
    486,194.40x = 181,750,951,327.68
  5. Step 5: Solve for x
    x = 181,750,951,327.68/486,194.40
  6. Step 6: Final answer
    x = 373,823.62

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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.