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Finding the Fourth Proportional to 388,066.80, 581,668.20 and 151,330.80

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Solution

The fourth proportional to 388,066.80, 581,668.20 and 151,330.80 is: 226,827.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,066.80 : 581,668.20 = 151,330.80 : x
  2. Step 2: Convert to fraction form
    388,066.80/581,668.20 = 151,330.80/x
  3. Step 3: Cross multiply
    388,066.80x = 581,668.20 × 151,330.80
  4. Step 4: Simplify right side
    388,066.80x = 88,024,314,040.56
  5. Step 5: Solve for x
    x = 88,024,314,040.56/388,066.80
  6. Step 6: Final answer
    x = 226,827.74

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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.