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Finding the Fourth Proportional to 581,765.28, 872,649.12 and 161,042.40

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Solution

The fourth proportional to 581,765.28, 872,649.12 and 161,042.40 is: 241,563.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,765.28 : 872,649.12 = 161,042.40 : x
  2. Step 2: Convert to fraction form
    581,765.28/872,649.12 = 161,042.40/x
  3. Step 3: Cross multiply
    581,765.28x = 872,649.12 × 161,042.40
  4. Step 4: Simplify right side
    581,765.28x = 140,533,508,642.69
  5. Step 5: Solve for x
    x = 140,533,508,642.69/581,765.28
  6. Step 6: Final answer
    x = 241,563.93

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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.