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Finding the Fourth Proportional to 316,385.03, 436,815.11 and 282,334.97

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Solution

The fourth proportional to 316,385.03, 436,815.11 and 282,334.97 is: 389,804.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,385.03 : 436,815.11 = 282,334.97 : x
  2. Step 2: Convert to fraction form
    316,385.03/436,815.11 = 282,334.97/x
  3. Step 3: Cross multiply
    316,385.03x = 436,815.11 × 282,334.97
  4. Step 4: Simplify right side
    316,385.03x = 123,328,182,775.27
  5. Step 5: Solve for x
    x = 123,328,182,775.27/316,385.03
  6. Step 6: Final answer
    x = 389,804.10

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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.