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Finding the Fourth Proportional to 316,383.72, 436,813.31 and 282,333.65

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Solution

The fourth proportional to 316,383.72, 436,813.31 and 282,333.65 is: 389,802.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,383.72 : 436,813.31 = 282,333.65 : x
  2. Step 2: Convert to fraction form
    316,383.72/436,813.31 = 282,333.65/x
  3. Step 3: Cross multiply
    316,383.72x = 436,813.31 × 282,333.65
  4. Step 4: Simplify right side
    316,383.72x = 123,327,095,861.25
  5. Step 5: Solve for x
    x = 123,327,095,861.25/316,383.72
  6. Step 6: Final answer
    x = 389,802.28

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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.