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Finding the Fourth Proportional to 578,808.75, 867,876.60 and 219,007.35

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Solution

The fourth proportional to 578,808.75, 867,876.60 and 219,007.35 is: 328,383.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,808.75 : 867,876.60 = 219,007.35 : x
  2. Step 2: Convert to fraction form
    578,808.75/867,876.60 = 219,007.35/x
  3. Step 3: Cross multiply
    578,808.75x = 867,876.60 × 219,007.35
  4. Step 4: Simplify right side
    578,808.75x = 190,071,353,197.97
  5. Step 5: Solve for x
    x = 190,071,353,197.97/578,808.75
  6. Step 6: Final answer
    x = 328,383.69

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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.