Home / 272,445.28-408,737.04-85,458.40

Finding the Fourth Proportional to 272,445.28, 408,737.04 and 85,458.40

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Solution

The fourth proportional to 272,445.28, 408,737.04 and 85,458.40 is: 128,209.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,445.28 : 408,737.04 = 85,458.40 : x
  2. Step 2: Convert to fraction form
    272,445.28/408,737.04 = 85,458.40/x
  3. Step 3: Cross multiply
    272,445.28x = 408,737.04 × 85,458.40
  4. Step 4: Simplify right side
    272,445.28x = 34,930,013,459.14
  5. Step 5: Solve for x
    x = 34,930,013,459.14/272,445.28
  6. Step 6: Final answer
    x = 128,209.28

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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.