Home / 385,229.80-577,844.70-243,512.20

Finding the Fourth Proportional to 385,229.80, 577,844.70 and 243,512.20

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Solution

The fourth proportional to 385,229.80, 577,844.70 and 243,512.20 is: 365,268.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,229.80 : 577,844.70 = 243,512.20 : x
  2. Step 2: Convert to fraction form
    385,229.80/577,844.70 = 243,512.20/x
  3. Step 3: Cross multiply
    385,229.80x = 577,844.70 × 243,512.20
  4. Step 4: Simplify right side
    385,229.80x = 140,712,234,155.34
  5. Step 5: Solve for x
    x = 140,712,234,155.34/385,229.80
  6. Step 6: Final answer
    x = 365,268.30

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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.