Home / 285,386.60-428,084.06-135,642.16

Finding the Fourth Proportional to 285,386.60, 428,084.06 and 135,642.16

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Solution

The fourth proportional to 285,386.60, 428,084.06 and 135,642.16 is: 203,465.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,386.60 : 428,084.06 = 135,642.16 : x
  2. Step 2: Convert to fraction form
    285,386.60/428,084.06 = 135,642.16/x
  3. Step 3: Cross multiply
    285,386.60x = 428,084.06 × 135,642.16
  4. Step 4: Simplify right side
    285,386.60x = 58,066,246,559.97
  5. Step 5: Solve for x
    x = 58,066,246,559.97/285,386.60
  6. Step 6: Final answer
    x = 203,465.22

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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.