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Finding the Fourth Proportional to 253,637.87, 380,444.95 and 103,841.12

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Solution

The fourth proportional to 253,637.87, 380,444.95 and 103,841.12 is: 155,756.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,637.87 : 380,444.95 = 103,841.12 : x
  2. Step 2: Convert to fraction form
    253,637.87/380,444.95 = 103,841.12/x
  3. Step 3: Cross multiply
    253,637.87x = 380,444.95 × 103,841.12
  4. Step 4: Simplify right side
    253,637.87x = 39,505,830,787.26
  5. Step 5: Solve for x
    x = 39,505,830,787.26/253,637.87
  6. Step 6: Final answer
    x = 155,756.83

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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.