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Finding the Fourth Proportional to 342,118.40, 472,082.18 and 189,135.93

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Solution

The fourth proportional to 342,118.40, 472,082.18 and 189,135.93 is: 260,984.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,118.40 : 472,082.18 = 189,135.93 : x
  2. Step 2: Convert to fraction form
    342,118.40/472,082.18 = 189,135.93/x
  3. Step 3: Cross multiply
    342,118.40x = 472,082.18 × 189,135.93
  4. Step 4: Simplify right side
    342,118.40x = 89,287,702,623.57
  5. Step 5: Solve for x
    x = 89,287,702,623.57/342,118.40
  6. Step 6: Final answer
    x = 260,984.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.