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Finding the Fourth Proportional to 318,668.66, 439,663.52 and 180,824.76

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Solution

The fourth proportional to 318,668.66, 439,663.52 and 180,824.76 is: 249,481.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,668.66 : 439,663.52 = 180,824.76 : x
  2. Step 2: Convert to fraction form
    318,668.66/439,663.52 = 180,824.76/x
  3. Step 3: Cross multiply
    318,668.66x = 439,663.52 × 180,824.76
  4. Step 4: Simplify right side
    318,668.66x = 79,502,050,484.76
  5. Step 5: Solve for x
    x = 79,502,050,484.76/318,668.66
  6. Step 6: Final answer
    x = 249,481.86

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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.