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Finding the Fourth Proportional to 485,871.60, 728,515.80 and 249,675.60

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Solution

The fourth proportional to 485,871.60, 728,515.80 and 249,675.60 is: 374,363.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,871.60 : 728,515.80 = 249,675.60 : x
  2. Step 2: Convert to fraction form
    485,871.60/728,515.80 = 249,675.60/x
  3. Step 3: Cross multiply
    485,871.60x = 728,515.80 × 249,675.60
  4. Step 4: Simplify right side
    485,871.60x = 181,892,619,474.48
  5. Step 5: Solve for x
    x = 181,892,619,474.48/485,871.60
  6. Step 6: Final answer
    x = 374,363.56

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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.