Home / 278,669.98-384,589.65-157,840.66

Finding the Fourth Proportional to 278,669.98, 384,589.65 and 157,840.66

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Solution

The fourth proportional to 278,669.98, 384,589.65 and 157,840.66 is: 217,834.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,669.98 : 384,589.65 = 157,840.66 : x
  2. Step 2: Convert to fraction form
    278,669.98/384,589.65 = 157,840.66/x
  3. Step 3: Cross multiply
    278,669.98x = 384,589.65 × 157,840.66
  4. Step 4: Simplify right side
    278,669.98x = 60,703,884,185.17
  5. Step 5: Solve for x
    x = 60,703,884,185.17/278,669.98
  6. Step 6: Final answer
    x = 217,834.31

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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.