Home / 212,831.94-319,280.70-72,557.76

Finding the Fourth Proportional to 212,831.94, 319,280.70 and 72,557.76

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Solution

The fourth proportional to 212,831.94, 319,280.70 and 72,557.76 is: 108,847.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,831.94 : 319,280.70 = 72,557.76 : x
  2. Step 2: Convert to fraction form
    212,831.94/319,280.70 = 72,557.76/x
  3. Step 3: Cross multiply
    212,831.94x = 319,280.70 × 72,557.76
  4. Step 4: Simplify right side
    212,831.94x = 23,166,292,403.23
  5. Step 5: Solve for x
    x = 23,166,292,403.23/212,831.94
  6. Step 6: Final answer
    x = 108,847.82

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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.