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Finding the Fourth Proportional to 578,756.80, 868,264.80 and 223,739.20

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Solution

The fourth proportional to 578,756.80, 868,264.80 and 223,739.20 is: 335,658.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,756.80 : 868,264.80 = 223,739.20 : x
  2. Step 2: Convert to fraction form
    578,756.80/868,264.80 = 223,739.20/x
  3. Step 3: Cross multiply
    578,756.80x = 868,264.80 × 223,739.20
  4. Step 4: Simplify right side
    578,756.80x = 194,264,871,740.16
  5. Step 5: Solve for x
    x = 194,264,871,740.16/578,756.80
  6. Step 6: Final answer
    x = 335,658.90

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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.