Home / 287,116.20-430,357.17-118,543.59

Finding the Fourth Proportional to 287,116.20, 430,357.17 and 118,543.59

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Solution

The fourth proportional to 287,116.20, 430,357.17 and 118,543.59 is: 177,684.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,116.20 : 430,357.17 = 118,543.59 : x
  2. Step 2: Convert to fraction form
    287,116.20/430,357.17 = 118,543.59/x
  3. Step 3: Cross multiply
    287,116.20x = 430,357.17 × 118,543.59
  4. Step 4: Simplify right side
    287,116.20x = 51,016,083,914.04
  5. Step 5: Solve for x
    x = 51,016,083,914.04/287,116.20
  6. Step 6: Final answer
    x = 177,684.45

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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.