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Finding the Fourth Proportional to 253,479.16, 349,795.83 and 138,754.81

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Solution

The fourth proportional to 253,479.16, 349,795.83 and 138,754.81 is: 191,478.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,479.16 : 349,795.83 = 138,754.81 : x
  2. Step 2: Convert to fraction form
    253,479.16/349,795.83 = 138,754.81/x
  3. Step 3: Cross multiply
    253,479.16x = 349,795.83 × 138,754.81
  4. Step 4: Simplify right side
    253,479.16x = 48,535,853,930.44
  5. Step 5: Solve for x
    x = 48,535,853,930.44/253,479.16
  6. Step 6: Final answer
    x = 191,478.68

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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.