Home / 212,946.80-319,031.40-173,289.20

Finding the Fourth Proportional to 212,946.80, 319,031.40 and 173,289.20

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Solution

The fourth proportional to 212,946.80, 319,031.40 and 173,289.20 is: 259,617.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,946.80 : 319,031.40 = 173,289.20 : x
  2. Step 2: Convert to fraction form
    212,946.80/319,031.40 = 173,289.20/x
  3. Step 3: Cross multiply
    212,946.80x = 319,031.40 × 173,289.20
  4. Step 4: Simplify right side
    212,946.80x = 55,284,696,080.88
  5. Step 5: Solve for x
    x = 55,284,696,080.88/212,946.80
  6. Step 6: Final answer
    x = 259,617.41

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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.