Home / 212,675.40-319,045.32-72,401.22

Finding the Fourth Proportional to 212,675.40, 319,045.32 and 72,401.22

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Solution

The fourth proportional to 212,675.40, 319,045.32 and 72,401.22 is: 108,612.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,675.40 : 319,045.32 = 72,401.22 : x
  2. Step 2: Convert to fraction form
    212,675.40/319,045.32 = 72,401.22/x
  3. Step 3: Cross multiply
    212,675.40x = 319,045.32 × 72,401.22
  4. Step 4: Simplify right side
    212,675.40x = 23,099,270,403.29
  5. Step 5: Solve for x
    x = 23,099,270,403.29/212,675.40
  6. Step 6: Final answer
    x = 108,612.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.