Home / 487,145.10-730,828.35-220,981.80

Finding the Fourth Proportional to 487,145.10, 730,828.35 and 220,981.80

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Solution

The fourth proportional to 487,145.10, 730,828.35 and 220,981.80 is: 331,522.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,145.10 : 730,828.35 = 220,981.80 : x
  2. Step 2: Convert to fraction form
    487,145.10/730,828.35 = 220,981.80/x
  3. Step 3: Cross multiply
    487,145.10x = 730,828.35 × 220,981.80
  4. Step 4: Simplify right side
    487,145.10x = 161,499,764,274.03
  5. Step 5: Solve for x
    x = 161,499,764,274.03/487,145.10
  6. Step 6: Final answer
    x = 331,522.92

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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.