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Finding the Fourth Proportional to 316,812.69, 437,213.57 and 180,868.77

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Solution

The fourth proportional to 316,812.69, 437,213.57 and 180,868.77 is: 249,605.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,812.69 : 437,213.57 = 180,868.77 : x
  2. Step 2: Convert to fraction form
    316,812.69/437,213.57 = 180,868.77/x
  3. Step 3: Cross multiply
    316,812.69x = 437,213.57 × 180,868.77
  4. Step 4: Simplify right side
    316,812.69x = 79,078,279,728.87
  5. Step 5: Solve for x
    x = 79,078,279,728.87/316,812.69
  6. Step 6: Final answer
    x = 249,605.78

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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.