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Finding the Fourth Proportional to 611,265.16, 916,909.02 and 211,918.92

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Solution

The fourth proportional to 611,265.16, 916,909.02 and 211,918.92 is: 317,882.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,265.16 : 916,909.02 = 211,918.92 : x
  2. Step 2: Convert to fraction form
    611,265.16/916,909.02 = 211,918.92/x
  3. Step 3: Cross multiply
    611,265.16x = 916,909.02 × 211,918.92
  4. Step 4: Simplify right side
    611,265.16x = 194,310,369,256.66
  5. Step 5: Solve for x
    x = 194,310,369,256.66/611,265.16
  6. Step 6: Final answer
    x = 317,882.29

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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.