Home / 611,156.20-916,514.70-211,689.40

Finding the Fourth Proportional to 611,156.20, 916,514.70 and 211,689.40

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Solution

The fourth proportional to 611,156.20, 916,514.70 and 211,689.40 is: 317,458.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,156.20 : 916,514.70 = 211,689.40 : x
  2. Step 2: Convert to fraction form
    611,156.20/916,514.70 = 211,689.40/x
  3. Step 3: Cross multiply
    611,156.20x = 916,514.70 × 211,689.40
  4. Step 4: Simplify right side
    611,156.20x = 194,016,446,934.18
  5. Step 5: Solve for x
    x = 194,016,446,934.18/611,156.20
  6. Step 6: Final answer
    x = 317,458.04

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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.