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Finding the Fourth Proportional to 395,088.38, 545,217.81 and 213,796.34

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Solution

The fourth proportional to 395,088.38, 545,217.81 and 213,796.34 is: 295,036.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,088.38 : 545,217.81 = 213,796.34 : x
  2. Step 2: Convert to fraction form
    395,088.38/545,217.81 = 213,796.34/x
  3. Step 3: Cross multiply
    395,088.38x = 545,217.81 × 213,796.34
  4. Step 4: Simplify right side
    395,088.38x = 116,565,572,280.82
  5. Step 5: Solve for x
    x = 116,565,572,280.82/395,088.38
  6. Step 6: Final answer
    x = 295,036.70

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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.