Home / 640,217.28-960,095.52-219,380.16

Finding the Fourth Proportional to 640,217.28, 960,095.52 and 219,380.16

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Solution

The fourth proportional to 640,217.28, 960,095.52 and 219,380.16 is: 328,991.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,217.28 : 960,095.52 = 219,380.16 : x
  2. Step 2: Convert to fraction form
    640,217.28/960,095.52 = 219,380.16/x
  3. Step 3: Cross multiply
    640,217.28x = 960,095.52 × 219,380.16
  4. Step 4: Simplify right side
    640,217.28x = 210,625,908,792.88
  5. Step 5: Solve for x
    x = 210,625,908,792.88/640,217.28
  6. Step 6: Final answer
    x = 328,991.29

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1.5x scale

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.