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Finding the Fourth Proportional to 261,143.52, 360,349.44 and 153,747.36

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Solution

The fourth proportional to 261,143.52, 360,349.44 and 153,747.36 is: 212,154.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,143.52 : 360,349.44 = 153,747.36 : x
  2. Step 2: Convert to fraction form
    261,143.52/360,349.44 = 153,747.36/x
  3. Step 3: Cross multiply
    261,143.52x = 360,349.44 × 153,747.36
  4. Step 4: Simplify right side
    261,143.52x = 55,402,775,077.48
  5. Step 5: Solve for x
    x = 55,402,775,077.48/261,143.52
  6. Step 6: Final answer
    x = 212,154.51

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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.