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Finding the Fourth Proportional to 495,187.20, 742,830 and 179,668.70

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Solution

The fourth proportional to 495,187.20, 742,830 and 179,668.70 is: 269,520.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,187.20 : 742,830 = 179,668.70 : x
  2. Step 2: Convert to fraction form
    495,187.20/742,830 = 179,668.70/x
  3. Step 3: Cross multiply
    495,187.20x = 742,830 × 179,668.70
  4. Step 4: Simplify right side
    495,187.20x = 133,463,300,421.00
  5. Step 5: Solve for x
    x = 133,463,300,421.00/495,187.20
  6. Step 6: Final answer
    x = 269,520.90

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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.