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Finding the Fourth Proportional to 316,668.66, 436,894.32 and 180,604.80

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Solution

The fourth proportional to 316,668.66, 436,894.32 and 180,604.80 is: 249,172.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,668.66 : 436,894.32 = 180,604.80 : x
  2. Step 2: Convert to fraction form
    316,668.66/436,894.32 = 180,604.80/x
  3. Step 3: Cross multiply
    316,668.66x = 436,894.32 × 180,604.80
  4. Step 4: Simplify right side
    316,668.66x = 78,905,211,284.74
  5. Step 5: Solve for x
    x = 78,905,211,284.74/316,668.66
  6. Step 6: Final answer
    x = 249,172.78

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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.