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Finding the Fourth Proportional to 243,745.20, 365,833.80 and 143,780.40

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Solution

The fourth proportional to 243,745.20, 365,833.80 and 143,780.40 is: 215,798.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,745.20 : 365,833.80 = 143,780.40 : x
  2. Step 2: Convert to fraction form
    243,745.20/365,833.80 = 143,780.40/x
  3. Step 3: Cross multiply
    243,745.20x = 365,833.80 × 143,780.40
  4. Step 4: Simplify right side
    243,745.20x = 52,599,730,097.52
  5. Step 5: Solve for x
    x = 52,599,730,097.52/243,745.20
  6. Step 6: Final answer
    x = 215,798.01

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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.