Home / 221,005.20-331,507.80-137,024.40

Finding the Fourth Proportional to 221,005.20, 331,507.80 and 137,024.40

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Solution

The fourth proportional to 221,005.20, 331,507.80 and 137,024.40 is: 205,536.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,005.20 : 331,507.80 = 137,024.40 : x
  2. Step 2: Convert to fraction form
    221,005.20/331,507.80 = 137,024.40/x
  3. Step 3: Cross multiply
    221,005.20x = 331,507.80 × 137,024.40
  4. Step 4: Simplify right side
    221,005.20x = 45,424,657,390.32
  5. Step 5: Solve for x
    x = 45,424,657,390.32/221,005.20
  6. Step 6: Final answer
    x = 205,536.60

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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.