Home / 281,130.70-387,964.74-153,808.42

Finding the Fourth Proportional to 281,130.70, 387,964.74 and 153,808.42

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Solution

The fourth proportional to 281,130.70, 387,964.74 and 153,808.42 is: 212,258.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,130.70 : 387,964.74 = 153,808.42 : x
  2. Step 2: Convert to fraction form
    281,130.70/387,964.74 = 153,808.42/x
  3. Step 3: Cross multiply
    281,130.70x = 387,964.74 × 153,808.42
  4. Step 4: Simplify right side
    281,130.70x = 59,672,243,675.11
  5. Step 5: Solve for x
    x = 59,672,243,675.11/281,130.70
  6. Step 6: Final answer
    x = 212,258.01

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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.