Home / 296,870.30-445,305.45-86,515.10

Finding the Fourth Proportional to 296,870.30, 445,305.45 and 86,515.10

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Solution

The fourth proportional to 296,870.30, 445,305.45 and 86,515.10 is: 129,772.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,870.30 : 445,305.45 = 86,515.10 : x
  2. Step 2: Convert to fraction form
    296,870.30/445,305.45 = 86,515.10/x
  3. Step 3: Cross multiply
    296,870.30x = 445,305.45 × 86,515.10
  4. Step 4: Simplify right side
    296,870.30x = 38,525,645,537.30
  5. Step 5: Solve for x
    x = 38,525,645,537.30/296,870.30
  6. Step 6: Final answer
    x = 129,772.65

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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.