Home / 401,439.84-602,160.81-135,387.24

Finding the Fourth Proportional to 401,439.84, 602,160.81 and 135,387.24

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Solution

The fourth proportional to 401,439.84, 602,160.81 and 135,387.24 is: 203,081.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,439.84 : 602,160.81 = 135,387.24 : x
  2. Step 2: Convert to fraction form
    401,439.84/602,160.81 = 135,387.24/x
  3. Step 3: Cross multiply
    401,439.84x = 602,160.81 × 135,387.24
  4. Step 4: Simplify right side
    401,439.84x = 81,524,890,102.06
  5. Step 5: Solve for x
    x = 81,524,890,102.06/401,439.84
  6. Step 6: Final answer
    x = 203,081.21

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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.