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Finding the Fourth Proportional to 578,138.80, 867,359.40 and 223,164.40

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Solution

The fourth proportional to 578,138.80, 867,359.40 and 223,164.40 is: 334,804.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,138.80 : 867,359.40 = 223,164.40 : x
  2. Step 2: Convert to fraction form
    578,138.80/867,359.40 = 223,164.40/x
  3. Step 3: Cross multiply
    578,138.80x = 867,359.40 × 223,164.40
  4. Step 4: Simplify right side
    578,138.80x = 193,563,740,085.36
  5. Step 5: Solve for x
    x = 193,563,740,085.36/578,138.80
  6. Step 6: Final answer
    x = 334,804.96

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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.