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Finding the Fourth Proportional to 342,383.40, 472,467.66 and 189,417.96

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Solution

The fourth proportional to 342,383.40, 472,467.66 and 189,417.96 is: 261,384.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,383.40 : 472,467.66 = 189,417.96 : x
  2. Step 2: Convert to fraction form
    342,383.40/472,467.66 = 189,417.96/x
  3. Step 3: Cross multiply
    342,383.40x = 472,467.66 × 189,417.96
  4. Step 4: Simplify right side
    342,383.40x = 89,493,860,323.17
  5. Step 5: Solve for x
    x = 89,493,860,323.17/342,383.40
  6. Step 6: Final answer
    x = 261,384.93

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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.