Home / 287,769.24-431,693.30-98,178.72

Finding the Fourth Proportional to 287,769.24, 431,693.30 and 98,178.72

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Solution

The fourth proportional to 287,769.24, 431,693.30 and 98,178.72 is: 147,281.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,769.24 : 431,693.30 = 98,178.72 : x
  2. Step 2: Convert to fraction form
    287,769.24/431,693.30 = 98,178.72/x
  3. Step 3: Cross multiply
    287,769.24x = 431,693.30 × 98,178.72
  4. Step 4: Simplify right side
    287,769.24x = 42,383,095,626.58
  5. Step 5: Solve for x
    x = 42,383,095,626.58/287,769.24
  6. Step 6: Final answer
    x = 147,281.54

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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.