Home / 255,344.79-382,297.10-135,129.45

Finding the Fourth Proportional to 255,344.79, 382,297.10 and 135,129.45

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Solution

The fourth proportional to 255,344.79, 382,297.10 and 135,129.45 is: 202,313.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,344.79 : 382,297.10 = 135,129.45 : x
  2. Step 2: Convert to fraction form
    255,344.79/382,297.10 = 135,129.45/x
  3. Step 3: Cross multiply
    255,344.79x = 382,297.10 × 135,129.45
  4. Step 4: Simplify right side
    255,344.79x = 51,659,596,859.60
  5. Step 5: Solve for x
    x = 51,659,596,859.60/255,344.79
  6. Step 6: Final answer
    x = 202,313.10

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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.