Home / 268,445.49-402,960-108,631.45

Finding the Fourth Proportional to 268,445.49, 402,960 and 108,631.45

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Solution

The fourth proportional to 268,445.49, 402,960 and 108,631.45 is: 163,065.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,445.49 : 402,960 = 108,631.45 : x
  2. Step 2: Convert to fraction form
    268,445.49/402,960 = 108,631.45/x
  3. Step 3: Cross multiply
    268,445.49x = 402,960 × 108,631.45
  4. Step 4: Simplify right side
    268,445.49x = 43,774,129,092
  5. Step 5: Solve for x
    x = 43,774,129,092/268,445.49
  6. Step 6: Final answer
    x = 163,065.25

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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.