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Finding the Fourth Proportional to 384,948.80, 577,423.20 and 243,231.20

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Solution

The fourth proportional to 384,948.80, 577,423.20 and 243,231.20 is: 364,846.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,948.80 : 577,423.20 = 243,231.20 : x
  2. Step 2: Convert to fraction form
    384,948.80/577,423.20 = 243,231.20/x
  3. Step 3: Cross multiply
    384,948.80x = 577,423.20 × 243,231.20
  4. Step 4: Simplify right side
    384,948.80x = 140,447,337,843.84
  5. Step 5: Solve for x
    x = 140,447,337,843.84/384,948.80
  6. Step 6: Final answer
    x = 364,846.80

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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.