Home / 280,799.10-421,198.95-70,437.04

Finding the Fourth Proportional to 280,799.10, 421,198.95 and 70,437.04

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Solution

The fourth proportional to 280,799.10, 421,198.95 and 70,437.04 is: 105,655.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,799.10 : 421,198.95 = 70,437.04 : x
  2. Step 2: Convert to fraction form
    280,799.10/421,198.95 = 70,437.04/x
  3. Step 3: Cross multiply
    280,799.10x = 421,198.95 × 70,437.04
  4. Step 4: Simplify right side
    280,799.10x = 29,668,006,236.11
  5. Step 5: Solve for x
    x = 29,668,006,236.11/280,799.10
  6. Step 6: Final answer
    x = 105,655.63

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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.