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Finding the Fourth Proportional to 421,460.31, 581,618.31 and 237,701.28

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Solution

The fourth proportional to 421,460.31, 581,618.31 and 237,701.28 is: 328,029.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,460.31 : 581,618.31 = 237,701.28 : x
  2. Step 2: Convert to fraction form
    421,460.31/581,618.31 = 237,701.28/x
  3. Step 3: Cross multiply
    421,460.31x = 581,618.31 × 237,701.28
  4. Step 4: Simplify right side
    421,460.31x = 138,251,416,758.44
  5. Step 5: Solve for x
    x = 138,251,416,758.44/421,460.31
  6. Step 6: Final answer
    x = 328,029.50

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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.