Home / 281,972.28-389,130.30-154,656.48

Finding the Fourth Proportional to 281,972.28, 389,130.30 and 154,656.48

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Solution

The fourth proportional to 281,972.28, 389,130.30 and 154,656.48 is: 213,430.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,972.28 : 389,130.30 = 154,656.48 : x
  2. Step 2: Convert to fraction form
    281,972.28/389,130.30 = 154,656.48/x
  3. Step 3: Cross multiply
    281,972.28x = 389,130.30 × 154,656.48
  4. Step 4: Simplify right side
    281,972.28x = 60,181,522,459.34
  5. Step 5: Solve for x
    x = 60,181,522,459.34/281,972.28
  6. Step 6: Final answer
    x = 213,430.63

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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.