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Finding the Fourth Proportional to 243,335.70, 365,003.53 and 77,123.70

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Solution

The fourth proportional to 243,335.70, 365,003.53 and 77,123.70 is: 115,685.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,335.70 : 365,003.53 = 77,123.70 : x
  2. Step 2: Convert to fraction form
    243,335.70/365,003.53 = 77,123.70/x
  3. Step 3: Cross multiply
    243,335.70x = 365,003.53 × 77,123.70
  4. Step 4: Simplify right side
    243,335.70x = 28,150,422,746.66
  5. Step 5: Solve for x
    x = 28,150,422,746.66/243,335.70
  6. Step 6: Final answer
    x = 115,685.54

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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.