Home / 221,098.80-331,567.20-71,378.40

Finding the Fourth Proportional to 221,098.80, 331,567.20 and 71,378.40

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Solution

The fourth proportional to 221,098.80, 331,567.20 and 71,378.40 is: 107,041.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,098.80 : 331,567.20 = 71,378.40 : x
  2. Step 2: Convert to fraction form
    221,098.80/331,567.20 = 71,378.40/x
  3. Step 3: Cross multiply
    221,098.80x = 331,567.20 × 71,378.40
  4. Step 4: Simplify right side
    221,098.80x = 23,666,736,228.48
  5. Step 5: Solve for x
    x = 23,666,736,228.48/221,098.80
  6. Step 6: Final answer
    x = 107,041.45

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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.