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Finding the Fourth Proportional to 243,803.05, 365,630.02 and 85,994.60

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Solution

The fourth proportional to 243,803.05, 365,630.02 and 85,994.60 is: 128,965.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,803.05 : 365,630.02 = 85,994.60 : x
  2. Step 2: Convert to fraction form
    243,803.05/365,630.02 = 85,994.60/x
  3. Step 3: Cross multiply
    243,803.05x = 365,630.02 × 85,994.60
  4. Step 4: Simplify right side
    243,803.05x = 31,442,205,274.76
  5. Step 5: Solve for x
    x = 31,442,205,274.76/243,803.05
  6. Step 6: Final answer
    x = 128,965.60

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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.