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Finding the Fourth Proportional to 485,338.84, 728,010.08 and 148,378.16

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Solution

The fourth proportional to 485,338.84, 728,010.08 and 148,378.16 is: 222,567.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,338.84 : 728,010.08 = 148,378.16 : x
  2. Step 2: Convert to fraction form
    485,338.84/728,010.08 = 148,378.16/x
  3. Step 3: Cross multiply
    485,338.84x = 728,010.08 × 148,378.16
  4. Step 4: Simplify right side
    485,338.84x = 108,020,796,131.85
  5. Step 5: Solve for x
    x = 108,020,796,131.85/485,338.84
  6. Step 6: Final answer
    x = 222,567.80

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1.5x scale

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.