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Finding the Fourth Proportional to 342,868.41, 514,261.65 and 90,168.59

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Solution

The fourth proportional to 342,868.41, 514,261.65 and 90,168.59 is: 135,242.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,868.41 : 514,261.65 = 90,168.59 : x
  2. Step 2: Convert to fraction form
    342,868.41/514,261.65 = 90,168.59/x
  3. Step 3: Cross multiply
    342,868.41x = 514,261.65 × 90,168.59
  4. Step 4: Simplify right side
    342,868.41x = 46,370,245,300.27
  5. Step 5: Solve for x
    x = 46,370,245,300.27/342,868.41
  6. Step 6: Final answer
    x = 135,242.10

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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.