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Finding the Fourth Proportional to 243,917.80, 365,903.58 and 77,667.56

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Solution

The fourth proportional to 243,917.80, 365,903.58 and 77,667.56 is: 116,509.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,917.80 : 365,903.58 = 77,667.56 : x
  2. Step 2: Convert to fraction form
    243,917.80/365,903.58 = 77,667.56/x
  3. Step 3: Cross multiply
    243,917.80x = 365,903.58 × 77,667.56
  4. Step 4: Simplify right side
    243,917.80x = 28,418,838,253.86
  5. Step 5: Solve for x
    x = 28,418,838,253.86/243,917.80
  6. Step 6: Final answer
    x = 116,509.90

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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.