Home / 287,226.50-430,839.48-129,270.38

Finding the Fourth Proportional to 287,226.50, 430,839.48 and 129,270.38

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Solution

The fourth proportional to 287,226.50, 430,839.48 and 129,270.38 is: 193,905.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,226.50 : 430,839.48 = 129,270.38 : x
  2. Step 2: Convert to fraction form
    287,226.50/430,839.48 = 129,270.38/x
  3. Step 3: Cross multiply
    287,226.50x = 430,839.48 × 129,270.38
  4. Step 4: Simplify right side
    287,226.50x = 55,694,783,298.60
  5. Step 5: Solve for x
    x = 55,694,783,298.60/287,226.50
  6. Step 6: Final answer
    x = 193,905.45

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1.5x scale

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.