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Finding the Fourth Proportional to 368,693.04, 552,865.92 and 218,953.20

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Solution

The fourth proportional to 368,693.04, 552,865.92 and 218,953.20 is: 328,326.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,693.04 : 552,865.92 = 218,953.20 : x
  2. Step 2: Convert to fraction form
    368,693.04/552,865.92 = 218,953.20/x
  3. Step 3: Cross multiply
    368,693.04x = 552,865.92 × 218,953.20
  4. Step 4: Simplify right side
    368,693.04x = 121,051,762,354.94
  5. Step 5: Solve for x
    x = 121,051,762,354.94/368,693.04
  6. Step 6: Final answer
    x = 328,326.68

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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.