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Finding the Fourth Proportional to 279,343.80, 385,535.99 and 164,585.78

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Solution

The fourth proportional to 279,343.80, 385,535.99 and 164,585.78 is: 227,152.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,343.80 : 385,535.99 = 164,585.78 : x
  2. Step 2: Convert to fraction form
    279,343.80/385,535.99 = 164,585.78/x
  3. Step 3: Cross multiply
    279,343.80x = 385,535.99 × 164,585.78
  4. Step 4: Simplify right side
    279,343.80x = 63,453,738,881.61
  5. Step 5: Solve for x
    x = 63,453,738,881.61/279,343.80
  6. Step 6: Final answer
    x = 227,152.84

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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.