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Finding the Fourth Proportional to 253,641.95, 380,500.28 and 76,163.25

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Solution

The fourth proportional to 253,641.95, 380,500.28 and 76,163.25 is: 114,256.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,641.95 : 380,500.28 = 76,163.25 : x
  2. Step 2: Convert to fraction form
    253,641.95/380,500.28 = 76,163.25/x
  3. Step 3: Cross multiply
    253,641.95x = 380,500.28 × 76,163.25
  4. Step 4: Simplify right side
    253,641.95x = 28,980,137,950.71
  5. Step 5: Solve for x
    x = 28,980,137,950.71/253,641.95
  6. Step 6: Final answer
    x = 114,256.09

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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.