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Finding the Fourth Proportional to 251,489, 346,879.15 and 170,776.40

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Solution

The fourth proportional to 251,489, 346,879.15 and 170,776.40 is: 235,552.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,489 : 346,879.15 = 170,776.40 : x
  2. Step 2: Convert to fraction form
    251,489/346,879.15 = 170,776.40/x
  3. Step 3: Cross multiply
    251,489x = 346,879.15 × 170,776.40
  4. Step 4: Simplify right side
    251,489x = 59,238,771,177.92
  5. Step 5: Solve for x
    x = 59,238,771,177.92/251,489
  6. Step 6: Final answer
    x = 235,552.14

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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.