Home / 215,529.30-323,639.55-145,718.10

Finding the Fourth Proportional to 215,529.30, 323,639.55 and 145,718.10

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Solution

The fourth proportional to 215,529.30, 323,639.55 and 145,718.10 is: 218,810.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,529.30 : 323,639.55 = 145,718.10 : x
  2. Step 2: Convert to fraction form
    215,529.30/323,639.55 = 145,718.10/x
  3. Step 3: Cross multiply
    215,529.30x = 323,639.55 × 145,718.10
  4. Step 4: Simplify right side
    215,529.30x = 47,160,140,310.86
  5. Step 5: Solve for x
    x = 47,160,140,310.86/215,529.30
  6. Step 6: Final answer
    x = 218,810.81

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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.