Home / 278,985.40-385,041.87-170,152.88

Finding the Fourth Proportional to 278,985.40, 385,041.87 and 170,152.88

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Solution

The fourth proportional to 278,985.40, 385,041.87 and 170,152.88 is: 234,836.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,985.40 : 385,041.87 = 170,152.88 : x
  2. Step 2: Convert to fraction form
    278,985.40/385,041.87 = 170,152.88/x
  3. Step 3: Cross multiply
    278,985.40x = 385,041.87 × 170,152.88
  4. Step 4: Simplify right side
    278,985.40x = 65,515,981,175.88
  5. Step 5: Solve for x
    x = 65,515,981,175.88/278,985.40
  6. Step 6: Final answer
    x = 234,836.60

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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.