Home / 427,943.20-642,016.32-147,452.08

Finding the Fourth Proportional to 427,943.20, 642,016.32 and 147,452.08

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Solution

The fourth proportional to 427,943.20, 642,016.32 and 147,452.08 is: 221,213.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,943.20 : 642,016.32 = 147,452.08 : x
  2. Step 2: Convert to fraction form
    427,943.20/642,016.32 = 147,452.08/x
  3. Step 3: Cross multiply
    427,943.20x = 642,016.32 × 147,452.08
  4. Step 4: Simplify right side
    427,943.20x = 94,666,641,777.95
  5. Step 5: Solve for x
    x = 94,666,641,777.95/427,943.20
  6. Step 6: Final answer
    x = 221,213.10

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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.