Home / 401,278.14-602,009.40-135,031.54

Finding the Fourth Proportional to 401,278.14, 602,009.40 and 135,031.54

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Solution

The fourth proportional to 401,278.14, 602,009.40 and 135,031.54 is: 202,578.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,278.14 : 602,009.40 = 135,031.54 : x
  2. Step 2: Convert to fraction form
    401,278.14/602,009.40 = 135,031.54/x
  3. Step 3: Cross multiply
    401,278.14x = 602,009.40 × 135,031.54
  4. Step 4: Simplify right side
    401,278.14x = 81,290,256,376.48
  5. Step 5: Solve for x
    x = 81,290,256,376.48/401,278.14
  6. Step 6: Final answer
    x = 202,578.33

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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.