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Finding the Fourth Proportional to 324,547.68, 486,867.59 and 99,926.78

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Solution

The fourth proportional to 324,547.68, 486,867.59 and 99,926.78 is: 149,904.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,547.68 : 486,867.59 = 99,926.78 : x
  2. Step 2: Convert to fraction form
    324,547.68/486,867.59 = 99,926.78/x
  3. Step 3: Cross multiply
    324,547.68x = 486,867.59 × 99,926.78
  4. Step 4: Simplify right side
    324,547.68x = 48,651,112,022.05
  5. Step 5: Solve for x
    x = 48,651,112,022.05/324,547.68
  6. Step 6: Final answer
    x = 149,904.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.