Home / 280,713.38-421,084.65-140,424.62

Finding the Fourth Proportional to 280,713.38, 421,084.65 and 140,424.62

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Solution

The fourth proportional to 280,713.38, 421,084.65 and 140,424.62 is: 210,644.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,713.38 : 421,084.65 = 140,424.62 : x
  2. Step 2: Convert to fraction form
    280,713.38/421,084.65 = 140,424.62/x
  3. Step 3: Cross multiply
    280,713.38x = 421,084.65 × 140,424.62
  4. Step 4: Simplify right side
    280,713.38x = 59,130,651,964.08
  5. Step 5: Solve for x
    x = 59,130,651,964.08/280,713.38
  6. Step 6: Final answer
    x = 210,644.22

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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.