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Finding the Fourth Proportional to 387,732.88, 535,030.56 and 215,622.96

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Solution

The fourth proportional to 387,732.88, 535,030.56 and 215,622.96 is: 297,536.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,732.88 : 535,030.56 = 215,622.96 : x
  2. Step 2: Convert to fraction form
    387,732.88/535,030.56 = 215,622.96/x
  3. Step 3: Cross multiply
    387,732.88x = 535,030.56 × 215,622.96
  4. Step 4: Simplify right side
    387,732.88x = 115,364,873,037.66
  5. Step 5: Solve for x
    x = 115,364,873,037.66/387,732.88
  6. Step 6: Final answer
    x = 297,536.99

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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.