Home / 281,143,288.40-421,986,962.59-135,679,248.05

Finding the Fourth Proportional to 281,143,288.40, 421,986,962.59 and 135,679,248.05

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Solution

The fourth proportional to 281,143,288.40, 421,986,962.59 and 135,679,248.05 is: 203,650,153.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,143,288.40 : 421,986,962.59 = 135,679,248.05 : x
  2. Step 2: Convert to fraction form
    281,143,288.40/421,986,962.59 = 135,679,248.05/x
  3. Step 3: Cross multiply
    281,143,288.40x = 421,986,962.59 × 135,679,248.05
  4. Step 4: Simplify right side
    281,143,288.40x = 57,254,873,768,665,536
  5. Step 5: Solve for x
    x = 57,254,873,768,665,536/281,143,288.40
  6. Step 6: Final answer
    x = 203,650,153.26

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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.