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Finding the Fourth Proportional to 345,248.88, 517,829.40 and 145,648.56

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Solution

The fourth proportional to 345,248.88, 517,829.40 and 145,648.56 is: 218,454.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,248.88 : 517,829.40 = 145,648.56 : x
  2. Step 2: Convert to fraction form
    345,248.88/517,829.40 = 145,648.56/x
  3. Step 3: Cross multiply
    345,248.88x = 517,829.40 × 145,648.56
  4. Step 4: Simplify right side
    345,248.88x = 75,421,106,435.66
  5. Step 5: Solve for x
    x = 75,421,106,435.66/345,248.88
  6. Step 6: Final answer
    x = 218,454.31

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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.