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Finding the Fourth Proportional to 342,316.70, 472,360.70 and 189,330.58

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Solution

The fourth proportional to 342,316.70, 472,360.70 and 189,330.58 is: 261,256.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,316.70 : 472,360.70 = 189,330.58 : x
  2. Step 2: Convert to fraction form
    342,316.70/472,360.70 = 189,330.58/x
  3. Step 3: Cross multiply
    342,316.70x = 472,360.70 × 189,330.58
  4. Step 4: Simplify right side
    342,316.70x = 89,432,321,991.75
  5. Step 5: Solve for x
    x = 89,432,321,991.75/342,316.70
  6. Step 6: Final answer
    x = 261,256.09

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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.