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Finding the Fourth Proportional to 384,721.80, 577,082.70 and 243,004.20

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Solution

The fourth proportional to 384,721.80, 577,082.70 and 243,004.20 is: 364,506.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,721.80 : 577,082.70 = 243,004.20 : x
  2. Step 2: Convert to fraction form
    384,721.80/577,082.70 = 243,004.20/x
  3. Step 3: Cross multiply
    384,721.80x = 577,082.70 × 243,004.20
  4. Step 4: Simplify right side
    384,721.80x = 140,233,519,847.34
  5. Step 5: Solve for x
    x = 140,233,519,847.34/384,721.80
  6. Step 6: Final answer
    x = 364,506.30

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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.