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Finding the Fourth Proportional to 357,277.52, 535,508.60 and 143,908.86

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Solution

The fourth proportional to 357,277.52, 535,508.60 and 143,908.86 is: 215,699.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,277.52 : 535,508.60 = 143,908.86 : x
  2. Step 2: Convert to fraction form
    357,277.52/535,508.60 = 143,908.86/x
  3. Step 3: Cross multiply
    357,277.52x = 535,508.60 × 143,908.86
  4. Step 4: Simplify right side
    357,277.52x = 77,064,432,146.20
  5. Step 5: Solve for x
    x = 77,064,432,146.20/357,277.52
  6. Step 6: Final answer
    x = 215,699.08

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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.