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Finding the Fourth Proportional to 357,878.72, 536,804.07 and 121,221.41

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Solution

The fourth proportional to 357,878.72, 536,804.07 and 121,221.41 is: 181,827.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,878.72 : 536,804.07 = 121,221.41 : x
  2. Step 2: Convert to fraction form
    357,878.72/536,804.07 = 121,221.41/x
  3. Step 3: Cross multiply
    357,878.72x = 536,804.07 × 121,221.41
  4. Step 4: Simplify right side
    357,878.72x = 65,072,143,575.12
  5. Step 5: Solve for x
    x = 65,072,143,575.12/357,878.72
  6. Step 6: Final answer
    x = 181,827.36

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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.