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Finding the Fourth Proportional to 309,030.66, 426,452.34 and 171,203.91

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Solution

The fourth proportional to 309,030.66, 426,452.34 and 171,203.91 is: 236,255.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,030.66 : 426,452.34 = 171,203.91 : x
  2. Step 2: Convert to fraction form
    309,030.66/426,452.34 = 171,203.91/x
  3. Step 3: Cross multiply
    309,030.66x = 426,452.34 × 171,203.91
  4. Step 4: Simplify right side
    309,030.66x = 73,010,308,036.65
  5. Step 5: Solve for x
    x = 73,010,308,036.65/309,030.66
  6. Step 6: Final answer
    x = 236,255.87

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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.