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Finding the Fourth Proportional to 309,259.52, 426,738.30 and 181,888.64

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Solution

The fourth proportional to 309,259.52, 426,738.30 and 181,888.64 is: 250,982.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,259.52 : 426,738.30 = 181,888.64 : x
  2. Step 2: Convert to fraction form
    309,259.52/426,738.30 = 181,888.64/x
  3. Step 3: Cross multiply
    309,259.52x = 426,738.30 × 181,888.64
  4. Step 4: Simplify right side
    309,259.52x = 77,618,849,022.91
  5. Step 5: Solve for x
    x = 77,618,849,022.91/309,259.52
  6. Step 6: Final answer
    x = 250,982.89

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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.