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Finding the Fourth Proportional to 266,489.60, 367,756.61 and 145,632.74

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Solution

The fourth proportional to 266,489.60, 367,756.61 and 145,632.74 is: 200,973.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,489.60 : 367,756.61 = 145,632.74 : x
  2. Step 2: Convert to fraction form
    266,489.60/367,756.61 = 145,632.74/x
  3. Step 3: Cross multiply
    266,489.60x = 367,756.61 × 145,632.74
  4. Step 4: Simplify right side
    266,489.60x = 53,557,400,200.46
  5. Step 5: Solve for x
    x = 53,557,400,200.46/266,489.60
  6. Step 6: Final answer
    x = 200,973.70

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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.