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Finding the Fourth Proportional to 371,903.84, 513,227.25 and 221,000.84

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Solution

The fourth proportional to 371,903.84, 513,227.25 and 221,000.84 is: 304,981.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,903.84 : 513,227.25 = 221,000.84 : x
  2. Step 2: Convert to fraction form
    371,903.84/513,227.25 = 221,000.84/x
  3. Step 3: Cross multiply
    371,903.84x = 513,227.25 × 221,000.84
  4. Step 4: Simplify right side
    371,903.84x = 113,423,650,794.75
  5. Step 5: Solve for x
    x = 113,423,650,794.75/371,903.84
  6. Step 6: Final answer
    x = 304,981.13

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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.