Home / 212,581,470.40-318,872,205.60-161,185,220.80

Finding the Fourth Proportional to 212,581,470.40, 318,872,205.60 and 161,185,220.80

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Solution

The fourth proportional to 212,581,470.40, 318,872,205.60 and 161,185,220.80 is: 241,777,831.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,581,470.40 : 318,872,205.60 = 161,185,220.80 : x
  2. Step 2: Convert to fraction form
    212,581,470.40/318,872,205.60 = 161,185,220.80/x
  3. Step 3: Cross multiply
    212,581,470.40x = 318,872,205.60 × 161,185,220.80
  4. Step 4: Simplify right side
    212,581,470.40x = 51,397,486,866,619,008
  5. Step 5: Solve for x
    x = 51,397,486,866,619,008/212,581,470.40
  6. Step 6: Final answer
    x = 241,777,831.20

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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.