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Finding the Fourth Proportional to 485,347.35, 728,022.95 and 148,386.54

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Solution

The fourth proportional to 485,347.35, 728,022.95 and 148,386.54 is: 222,580.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,347.35 : 728,022.95 = 148,386.54 : x
  2. Step 2: Convert to fraction form
    485,347.35/728,022.95 = 148,386.54/x
  3. Step 3: Cross multiply
    485,347.35x = 728,022.95 × 148,386.54
  4. Step 4: Simplify right side
    485,347.35x = 108,028,806,591.09
  5. Step 5: Solve for x
    x = 108,028,806,591.09/485,347.35
  6. Step 6: Final answer
    x = 222,580.40

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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.