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Finding the Fourth Proportional to 243,601.20, 365,401.80 and 66,130.20

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Solution

The fourth proportional to 243,601.20, 365,401.80 and 66,130.20 is: 99,195.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,601.20 : 365,401.80 = 66,130.20 : x
  2. Step 2: Convert to fraction form
    243,601.20/365,401.80 = 66,130.20/x
  3. Step 3: Cross multiply
    243,601.20x = 365,401.80 × 66,130.20
  4. Step 4: Simplify right side
    243,601.20x = 24,164,094,114.36
  5. Step 5: Solve for x
    x = 24,164,094,114.36/243,601.20
  6. Step 6: Final answer
    x = 99,195.30

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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.