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Finding the Fourth Proportional to 266,838.78, 368,234.52 and 145,978.68

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Solution

The fourth proportional to 266,838.78, 368,234.52 and 145,978.68 is: 201,448.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,838.78 : 368,234.52 = 145,978.68 : x
  2. Step 2: Convert to fraction form
    266,838.78/368,234.52 = 145,978.68/x
  3. Step 3: Cross multiply
    266,838.78x = 368,234.52 × 145,978.68
  4. Step 4: Simplify right side
    266,838.78x = 53,754,389,160.03
  5. Step 5: Solve for x
    x = 53,754,389,160.03/266,838.78
  6. Step 6: Final answer
    x = 201,448.94

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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.