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Finding the Fourth Proportional to 342,317.70, 472,362.07 and 189,331.58

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Solution

The fourth proportional to 342,317.70, 472,362.07 and 189,331.58 is: 261,257.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,317.70 : 472,362.07 = 189,331.58 : x
  2. Step 2: Convert to fraction form
    342,317.70/472,362.07 = 189,331.58/x
  3. Step 3: Cross multiply
    342,317.70x = 472,362.07 × 189,331.58
  4. Step 4: Simplify right side
    342,317.70x = 89,433,057,045.17
  5. Step 5: Solve for x
    x = 89,433,057,045.17/342,317.70
  6. Step 6: Final answer
    x = 261,257.47

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1.5x scale

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.