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Finding the Fourth Proportional to 304,660.12, 420,371.22 and 191,417.26

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Solution

The fourth proportional to 304,660.12, 420,371.22 and 191,417.26 is: 264,118.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,660.12 : 420,371.22 = 191,417.26 : x
  2. Step 2: Convert to fraction form
    304,660.12/420,371.22 = 191,417.26/x
  3. Step 3: Cross multiply
    304,660.12x = 420,371.22 × 191,417.26
  4. Step 4: Simplify right side
    304,660.12x = 80,466,307,115.26
  5. Step 5: Solve for x
    x = 80,466,307,115.26/304,660.12
  6. Step 6: Final answer
    x = 264,118.28

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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.