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Finding the Fourth Proportional to 253,637.87, 380,367.06 and 73,685.86

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Solution

The fourth proportional to 253,637.87, 380,367.06 and 73,685.86 is: 110,502.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,637.87 : 380,367.06 = 73,685.86 : x
  2. Step 2: Convert to fraction form
    253,637.87/380,367.06 = 73,685.86/x
  3. Step 3: Cross multiply
    253,637.87x = 380,367.06 × 73,685.86
  4. Step 4: Simplify right side
    253,637.87x = 28,027,671,661.51
  5. Step 5: Solve for x
    x = 28,027,671,661.51/253,637.87
  6. Step 6: Final answer
    x = 110,502.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.