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Finding the Fourth Proportional to 421,252.58, 581,807.88 and 283,191.73

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Solution

The fourth proportional to 421,252.58, 581,807.88 and 283,191.73 is: 391,126.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,252.58 : 581,807.88 = 283,191.73 : x
  2. Step 2: Convert to fraction form
    421,252.58/581,807.88 = 283,191.73/x
  3. Step 3: Cross multiply
    421,252.58x = 581,807.88 × 283,191.73
  4. Step 4: Simplify right side
    421,252.58x = 164,763,178,610.31
  5. Step 5: Solve for x
    x = 164,763,178,610.31/421,252.58
  6. Step 6: Final answer
    x = 391,126.81

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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.