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Finding the Fourth Proportional to 318,870.46, 440,024.62 and 198,009.15

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Solution

The fourth proportional to 318,870.46, 440,024.62 and 198,009.15 is: 273,242.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,870.46 : 440,024.62 = 198,009.15 : x
  2. Step 2: Convert to fraction form
    318,870.46/440,024.62 = 198,009.15/x
  3. Step 3: Cross multiply
    318,870.46x = 440,024.62 × 198,009.15
  4. Step 4: Simplify right side
    318,870.46x = 87,128,897,795.10
  5. Step 5: Solve for x
    x = 87,128,897,795.10/318,870.46
  6. Step 6: Final answer
    x = 273,242.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.