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Finding the Fourth Proportional to 279,019.46, 385,044.95 and 151,695.05

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Solution

The fourth proportional to 279,019.46, 385,044.95 and 151,695.05 is: 209,338.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,019.46 : 385,044.95 = 151,695.05 : x
  2. Step 2: Convert to fraction form
    279,019.46/385,044.95 = 151,695.05/x
  3. Step 3: Cross multiply
    279,019.46x = 385,044.95 × 151,695.05
  4. Step 4: Simplify right side
    279,019.46x = 58,409,410,258.80
  5. Step 5: Solve for x
    x = 58,409,410,258.80/279,019.46
  6. Step 6: Final answer
    x = 209,338.13

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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.