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Finding the Fourth Proportional to 508,239.15, 701,405.59 and 290,479.89

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Solution

The fourth proportional to 508,239.15, 701,405.59 and 290,479.89 is: 400,882.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,239.15 : 701,405.59 = 290,479.89 : x
  2. Step 2: Convert to fraction form
    508,239.15/701,405.59 = 290,479.89/x
  3. Step 3: Cross multiply
    508,239.15x = 701,405.59 × 290,479.89
  4. Step 4: Simplify right side
    508,239.15x = 203,744,218,628.59
  5. Step 5: Solve for x
    x = 203,744,218,628.59/508,239.15
  6. Step 6: Final answer
    x = 400,882.57

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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.