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Finding the Fourth Proportional to 340,387.83, 469,731.33 and 187,422.84

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Solution

The fourth proportional to 340,387.83, 469,731.33 and 187,422.84 is: 258,641.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,387.83 : 469,731.33 = 187,422.84 : x
  2. Step 2: Convert to fraction form
    340,387.83/469,731.33 = 187,422.84/x
  3. Step 3: Cross multiply
    340,387.83x = 469,731.33 × 187,422.84
  4. Step 4: Simplify right side
    340,387.83x = 88,038,379,905.58
  5. Step 5: Solve for x
    x = 88,038,379,905.58/340,387.83
  6. Step 6: Final answer
    x = 258,641.39

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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.