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Finding the Fourth Proportional to 519,802.80, 779,995.80 and 220,232.40

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Solution

The fourth proportional to 519,802.80, 779,995.80 and 220,232.40 is: 330,472.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,802.80 : 779,995.80 = 220,232.40 : x
  2. Step 2: Convert to fraction form
    519,802.80/779,995.80 = 220,232.40/x
  3. Step 3: Cross multiply
    519,802.80x = 779,995.80 × 220,232.40
  4. Step 4: Simplify right side
    519,802.80x = 171,780,347,023.92
  5. Step 5: Solve for x
    x = 171,780,347,023.92/519,802.80
  6. Step 6: Final answer
    x = 330,472.15

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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.