Home / 279,278,517.51-385,404,351.21-161,871,948.45

Finding the Fourth Proportional to 279,278,517.51, 385,404,351.21 and 161,871,948.45

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Solution

The fourth proportional to 279,278,517.51, 385,404,351.21 and 161,871,948.45 is: 223,383,287.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,278,517.51 : 385,404,351.21 = 161,871,948.45 : x
  2. Step 2: Convert to fraction form
    279,278,517.51/385,404,351.21 = 161,871,948.45/x
  3. Step 3: Cross multiply
    279,278,517.51x = 385,404,351.21 × 161,871,948.45
  4. Step 4: Simplify right side
    279,278,517.51x = 62,386,153,271,470,808
  5. Step 5: Solve for x
    x = 62,386,153,271,470,808/279,278,517.51
  6. Step 6: Final answer
    x = 223,383,287.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.