Home / 287,446.55-431,221.79-118,875.35

Finding the Fourth Proportional to 287,446.55, 431,221.79 and 118,875.35

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Solution

The fourth proportional to 287,446.55, 431,221.79 and 118,875.35 is: 178,334.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,446.55 : 431,221.79 = 118,875.35 : x
  2. Step 2: Convert to fraction form
    287,446.55/431,221.79 = 118,875.35/x
  3. Step 3: Cross multiply
    287,446.55x = 431,221.79 × 118,875.35
  4. Step 4: Simplify right side
    287,446.55x = 51,261,642,589.12
  5. Step 5: Solve for x
    x = 51,261,642,589.12/287,446.55
  6. Step 6: Final answer
    x = 178,334.52

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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.