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Finding the Fourth Proportional to 311,421.40, 466,959.30 and 124,221.40

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Solution

The fourth proportional to 311,421.40, 466,959.30 and 124,221.40 is: 186,263.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,421.40 : 466,959.30 = 124,221.40 : x
  2. Step 2: Convert to fraction form
    311,421.40/466,959.30 = 124,221.40/x
  3. Step 3: Cross multiply
    311,421.40x = 466,959.30 × 124,221.40
  4. Step 4: Simplify right side
    311,421.40x = 58,006,337,989.02
  5. Step 5: Solve for x
    x = 58,006,337,989.02/311,421.40
  6. Step 6: Final answer
    x = 186,263.17

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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.