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Finding the Fourth Proportional to 485,885.56, 728,828.16 and 249,077.20

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Solution

The fourth proportional to 485,885.56, 728,828.16 and 249,077.20 is: 373,615.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,885.56 : 728,828.16 = 249,077.20 : x
  2. Step 2: Convert to fraction form
    485,885.56/728,828.16 = 249,077.20/x
  3. Step 3: Cross multiply
    485,885.56x = 728,828.16 × 249,077.20
  4. Step 4: Simplify right side
    485,885.56x = 181,534,477,373.95
  5. Step 5: Solve for x
    x = 181,534,477,373.95/485,885.56
  6. Step 6: Final answer
    x = 373,615.71

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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.