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Finding the Fourth Proportional to 225,515.84, 311,211.99 and 123,545.00

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Solution

The fourth proportional to 225,515.84, 311,211.99 and 123,545.00 is: 170,492.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,515.84 : 311,211.99 = 123,545.00 : x
  2. Step 2: Convert to fraction form
    225,515.84/311,211.99 = 123,545.00/x
  3. Step 3: Cross multiply
    225,515.84x = 311,211.99 × 123,545.00
  4. Step 4: Simplify right side
    225,515.84x = 38,448,686,082.58
  5. Step 5: Solve for x
    x = 38,448,686,082.58/225,515.84
  6. Step 6: Final answer
    x = 170,492.18

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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.