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Finding the Fourth Proportional to 357,878.82, 536,804.21 and 121,221.50

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Solution

The fourth proportional to 357,878.82, 536,804.21 and 121,221.50 is: 181,827.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,878.82 : 536,804.21 = 121,221.50 : x
  2. Step 2: Convert to fraction form
    357,878.82/536,804.21 = 121,221.50/x
  3. Step 3: Cross multiply
    357,878.82x = 536,804.21 × 121,221.50
  4. Step 4: Simplify right side
    357,878.82x = 65,072,209,161.55
  5. Step 5: Solve for x
    x = 65,072,209,161.55/357,878.82
  6. Step 6: Final answer
    x = 181,827.49

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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.