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Finding the Fourth Proportional to 389,903.20, 583,933.20 and 264,565.60

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Solution

The fourth proportional to 389,903.20, 583,933.20 and 264,565.60 is: 396,223.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,903.20 : 583,933.20 = 264,565.60 : x
  2. Step 2: Convert to fraction form
    389,903.20/583,933.20 = 264,565.60/x
  3. Step 3: Cross multiply
    389,903.20x = 583,933.20 × 264,565.60
  4. Step 4: Simplify right side
    389,903.20x = 154,488,637,417.92
  5. Step 5: Solve for x
    x = 154,488,637,417.92/389,903.20
  6. Step 6: Final answer
    x = 396,223.06

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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.