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Finding the Fourth Proportional to 388,961.24, 536,866.38 and 253,333.16

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Solution

The fourth proportional to 388,961.24, 536,866.38 and 253,333.16 is: 349,664.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,961.24 : 536,866.38 = 253,333.16 : x
  2. Step 2: Convert to fraction form
    388,961.24/536,866.38 = 253,333.16/x
  3. Step 3: Cross multiply
    388,961.24x = 536,866.38 × 253,333.16
  4. Step 4: Simplify right side
    388,961.24x = 136,006,056,543.16
  5. Step 5: Solve for x
    x = 136,006,056,543.16/388,961.24
  6. Step 6: Final answer
    x = 349,664.81

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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.