Home / 487,136.20-730,358.70-221,024.20

Finding the Fourth Proportional to 487,136.20, 730,358.70 and 221,024.20

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Solution

The fourth proportional to 487,136.20, 730,358.70 and 221,024.20 is: 331,379.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,136.20 : 730,358.70 = 221,024.20 : x
  2. Step 2: Convert to fraction form
    487,136.20/730,358.70 = 221,024.20/x
  3. Step 3: Cross multiply
    487,136.20x = 730,358.70 × 221,024.20
  4. Step 4: Simplify right side
    487,136.20x = 161,426,947,380.54
  5. Step 5: Solve for x
    x = 161,426,947,380.54/487,136.20
  6. Step 6: Final answer
    x = 331,379.49

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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.