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Finding the Fourth Proportional to 353,641.05, 530,589.47 and 218,547

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Solution

The fourth proportional to 353,641.05, 530,589.47 and 218,547 is: 327,899.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,641.05 : 530,589.47 = 218,547 : x
  2. Step 2: Convert to fraction form
    353,641.05/530,589.47 = 218,547/x
  3. Step 3: Cross multiply
    353,641.05x = 530,589.47 × 218,547
  4. Step 4: Simplify right side
    353,641.05x = 115,958,735,807.36
  5. Step 5: Solve for x
    x = 115,958,735,807.36/353,641.05
  6. Step 6: Final answer
    x = 327,899.53

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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.