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Finding the Fourth Proportional to 309,267.30, 426,781.65 and 181,951.09

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Solution

The fourth proportional to 309,267.30, 426,781.65 and 181,951.09 is: 251,088.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,267.30 : 426,781.65 = 181,951.09 : x
  2. Step 2: Convert to fraction form
    309,267.30/426,781.65 = 181,951.09/x
  3. Step 3: Cross multiply
    309,267.30x = 426,781.65 × 181,951.09
  4. Step 4: Simplify right side
    309,267.30x = 77,653,386,409.50
  5. Step 5: Solve for x
    x = 77,653,386,409.50/309,267.30
  6. Step 6: Final answer
    x = 251,088.26

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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.