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Finding the Fourth Proportional to 316,382.97, 436,812.27 and 282,332.91

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Solution

The fourth proportional to 316,382.97, 436,812.27 and 282,332.91 is: 389,801.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,382.97 : 436,812.27 = 282,332.91 : x
  2. Step 2: Convert to fraction form
    316,382.97/436,812.27 = 282,332.91/x
  3. Step 3: Cross multiply
    316,382.97x = 436,812.27 × 282,332.91
  4. Step 4: Simplify right side
    316,382.97x = 123,326,479,312.81
  5. Step 5: Solve for x
    x = 123,326,479,312.81/316,382.97
  6. Step 6: Final answer
    x = 389,801.26

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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.