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Finding the Fourth Proportional to 578,091.80, 867,288.90 and 223,117.40

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Solution

The fourth proportional to 578,091.80, 867,288.90 and 223,117.40 is: 334,734.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,091.80 : 867,288.90 = 223,117.40 : x
  2. Step 2: Convert to fraction form
    578,091.80/867,288.90 = 223,117.40/x
  3. Step 3: Cross multiply
    578,091.80x = 867,288.90 × 223,117.40
  4. Step 4: Simplify right side
    578,091.80x = 193,507,244,416.86
  5. Step 5: Solve for x
    x = 193,507,244,416.86/578,091.80
  6. Step 6: Final answer
    x = 334,734.46

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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.