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Finding the Fourth Proportional to 231,696.25, 319,575.72 and 212,637.57

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Solution

The fourth proportional to 231,696.25, 319,575.72 and 212,637.57 is: 293,288.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,696.25 : 319,575.72 = 212,637.57 : x
  2. Step 2: Convert to fraction form
    231,696.25/319,575.72 = 212,637.57/x
  3. Step 3: Cross multiply
    231,696.25x = 319,575.72 × 212,637.57
  4. Step 4: Simplify right side
    231,696.25x = 67,953,803,085.08
  5. Step 5: Solve for x
    x = 67,953,803,085.08/231,696.25
  6. Step 6: Final answer
    x = 293,288.32

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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.