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Finding the Fourth Proportional to 279,513, 385,734.78 and 152,195.52

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Solution

The fourth proportional to 279,513, 385,734.78 and 152,195.52 is: 210,033.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,513 : 385,734.78 = 152,195.52 : x
  2. Step 2: Convert to fraction form
    279,513/385,734.78 = 152,195.52/x
  3. Step 3: Cross multiply
    279,513x = 385,734.78 × 152,195.52
  4. Step 4: Simplify right side
    279,513x = 58,707,105,424.19
  5. Step 5: Solve for x
    x = 58,707,105,424.19/279,513
  6. Step 6: Final answer
    x = 210,033.54

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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.