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Finding the Fourth Proportional to 485,884.56, 728,826.66 and 249,076.20

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Solution

The fourth proportional to 485,884.56, 728,826.66 and 249,076.20 is: 373,614.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,884.56 : 728,826.66 = 249,076.20 : x
  2. Step 2: Convert to fraction form
    485,884.56/728,826.66 = 249,076.20/x
  3. Step 3: Cross multiply
    485,884.56x = 728,826.66 × 249,076.20
  4. Step 4: Simplify right side
    485,884.56x = 181,533,374,931.49
  5. Step 5: Solve for x
    x = 181,533,374,931.49/485,884.56
  6. Step 6: Final answer
    x = 373,614.21

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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.