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Finding the Fourth Proportional to 218,993, 302,210.34 and 118,391

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Solution

The fourth proportional to 218,993, 302,210.34 and 118,391 is: 163,379.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,993 : 302,210.34 = 118,391 : x
  2. Step 2: Convert to fraction form
    218,993/302,210.34 = 118,391/x
  3. Step 3: Cross multiply
    218,993x = 302,210.34 × 118,391
  4. Step 4: Simplify right side
    218,993x = 35,778,984,362.94
  5. Step 5: Solve for x
    x = 35,778,984,362.94/218,993
  6. Step 6: Final answer
    x = 163,379.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.