Home / 370,859.10-556,288.65-90,378.78

Finding the Fourth Proportional to 370,859.10, 556,288.65 and 90,378.78

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Solution

The fourth proportional to 370,859.10, 556,288.65 and 90,378.78 is: 135,568.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,859.10 : 556,288.65 = 90,378.78 : x
  2. Step 2: Convert to fraction form
    370,859.10/556,288.65 = 90,378.78/x
  3. Step 3: Cross multiply
    370,859.10x = 556,288.65 × 90,378.78
  4. Step 4: Simplify right side
    370,859.10x = 50,276,689,514.85
  5. Step 5: Solve for x
    x = 50,276,689,514.85/370,859.10
  6. Step 6: Final answer
    x = 135,568.17

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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.