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Finding the Fourth Proportional to 545,211.22, 817,816.84 and 245,341.47

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Solution

The fourth proportional to 545,211.22, 817,816.84 and 245,341.47 is: 368,012.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,211.22 : 817,816.84 = 245,341.47 : x
  2. Step 2: Convert to fraction form
    545,211.22/817,816.84 = 245,341.47/x
  3. Step 3: Cross multiply
    545,211.22x = 817,816.84 × 245,341.47
  4. Step 4: Simplify right side
    545,211.22x = 200,644,388,169.81
  5. Step 5: Solve for x
    x = 200,644,388,169.81/545,211.22
  6. Step 6: Final answer
    x = 368,012.21

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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.