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Finding the Fourth Proportional to 261,321.52, 360,613.11 and 153,896.08

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Solution

The fourth proportional to 261,321.52, 360,613.11 and 153,896.08 is: 212,370.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,321.52 : 360,613.11 = 153,896.08 : x
  2. Step 2: Convert to fraction form
    261,321.52/360,613.11 = 153,896.08/x
  3. Step 3: Cross multiply
    261,321.52x = 360,613.11 × 153,896.08
  4. Step 4: Simplify right side
    261,321.52x = 55,496,944,025.61
  5. Step 5: Solve for x
    x = 55,496,944,025.61/261,321.52
  6. Step 6: Final answer
    x = 212,370.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.