Home / 212,963.28-319,407.44-77,999.46

Finding the Fourth Proportional to 212,963.28, 319,407.44 and 77,999.46

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Solution

The fourth proportional to 212,963.28, 319,407.44 and 77,999.46 is: 116,985.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,963.28 : 319,407.44 = 77,999.46 : x
  2. Step 2: Convert to fraction form
    212,963.28/319,407.44 = 77,999.46/x
  3. Step 3: Cross multiply
    212,963.28x = 319,407.44 × 77,999.46
  4. Step 4: Simplify right side
    212,963.28x = 24,913,607,839.98
  5. Step 5: Solve for x
    x = 24,913,607,839.98/212,963.28
  6. Step 6: Final answer
    x = 116,985.46

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1.5x scale

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.