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Finding the Fourth Proportional to 384,945.80, 577,418.70 and 243,228.20

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Solution

The fourth proportional to 384,945.80, 577,418.70 and 243,228.20 is: 364,842.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,945.80 : 577,418.70 = 243,228.20 : x
  2. Step 2: Convert to fraction form
    384,945.80/577,418.70 = 243,228.20/x
  3. Step 3: Cross multiply
    384,945.80x = 577,418.70 × 243,228.20
  4. Step 4: Simplify right side
    384,945.80x = 140,444,511,047.34
  5. Step 5: Solve for x
    x = 140,444,511,047.34/384,945.80
  6. Step 6: Final answer
    x = 364,842.30

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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.