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Finding the Fourth Proportional to 401,308.70, 602,055.70 and 135,062.72

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Solution

The fourth proportional to 401,308.70, 602,055.70 and 135,062.72 is: 202,625.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,308.70 : 602,055.70 = 135,062.72 : x
  2. Step 2: Convert to fraction form
    401,308.70/602,055.70 = 135,062.72/x
  3. Step 3: Cross multiply
    401,308.70x = 602,055.70 × 135,062.72
  4. Step 4: Simplify right side
    401,308.70x = 81,315,277,085.57
  5. Step 5: Solve for x
    x = 81,315,277,085.57/401,308.70
  6. Step 6: Final answer
    x = 202,625.25

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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.