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Finding the Fourth Proportional to 388,657, 536,579.94 and 254,754.28

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Solution

The fourth proportional to 388,657, 536,579.94 and 254,754.28 is: 351,713.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,657 : 536,579.94 = 254,754.28 : x
  2. Step 2: Convert to fraction form
    388,657/536,579.94 = 254,754.28/x
  3. Step 3: Cross multiply
    388,657x = 536,579.94 × 254,754.28
  4. Step 4: Simplify right side
    388,657x = 136,696,036,277.14
  5. Step 5: Solve for x
    x = 136,696,036,277.14/388,657
  6. Step 6: Final answer
    x = 351,713.82

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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.