Home / 231,740.12-319,636.16-212,681.33

Finding the Fourth Proportional to 231,740.12, 319,636.16 and 212,681.33

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Solution

The fourth proportional to 231,740.12, 319,636.16 and 212,681.33 is: 293,348.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,740.12 : 319,636.16 = 212,681.33 : x
  2. Step 2: Convert to fraction form
    231,740.12/319,636.16 = 212,681.33/x
  3. Step 3: Cross multiply
    231,740.12x = 319,636.16 × 212,681.33
  4. Step 4: Simplify right side
    231,740.12x = 67,980,642,959.50
  5. Step 5: Solve for x
    x = 67,980,642,959.50/231,740.12
  6. Step 6: Final answer
    x = 293,348.61

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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.