Home / 420,766.14-631,154.80-140,283.48

Finding the Fourth Proportional to 420,766.14, 631,154.80 and 140,283.48

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Solution

The fourth proportional to 420,766.14, 631,154.80 and 140,283.48 is: 210,427.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,766.14 : 631,154.80 = 140,283.48 : x
  2. Step 2: Convert to fraction form
    420,766.14/631,154.80 = 140,283.48/x
  3. Step 3: Cross multiply
    420,766.14x = 631,154.80 × 140,283.48
  4. Step 4: Simplify right side
    420,766.14x = 88,540,592,639.17
  5. Step 5: Solve for x
    x = 88,540,592,639.17/420,766.14
  6. Step 6: Final answer
    x = 210,427.08

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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.