Home / 281,545.08-388,532.28-154,225.20

Finding the Fourth Proportional to 281,545.08, 388,532.28 and 154,225.20

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Solution

The fourth proportional to 281,545.08, 388,532.28 and 154,225.20 is: 212,830.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,545.08 : 388,532.28 = 154,225.20 : x
  2. Step 2: Convert to fraction form
    281,545.08/388,532.28 = 154,225.20/x
  3. Step 3: Cross multiply
    281,545.08x = 388,532.28 × 154,225.20
  4. Step 4: Simplify right side
    281,545.08x = 59,921,468,589.46
  5. Step 5: Solve for x
    x = 59,921,468,589.46/281,545.08
  6. Step 6: Final answer
    x = 212,830.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.