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Finding the Fourth Proportional to 253,411.53, 380,129.95 and 75,901.63

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Solution

The fourth proportional to 253,411.53, 380,129.95 and 75,901.63 is: 113,856.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,411.53 : 380,129.95 = 75,901.63 : x
  2. Step 2: Convert to fraction form
    253,411.53/380,129.95 = 75,901.63/x
  3. Step 3: Cross multiply
    253,411.53x = 380,129.95 × 75,901.63
  4. Step 4: Simplify right side
    253,411.53x = 28,852,482,816.82
  5. Step 5: Solve for x
    x = 28,852,482,816.82/253,411.53
  6. Step 6: Final answer
    x = 113,856.24

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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.