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Finding the Fourth Proportional to 388,859.60, 583,289.40 and 264,443.60

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Solution

The fourth proportional to 388,859.60, 583,289.40 and 264,443.60 is: 396,665.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,859.60 : 583,289.40 = 264,443.60 : x
  2. Step 2: Convert to fraction form
    388,859.60/583,289.40 = 264,443.60/x
  3. Step 3: Cross multiply
    388,859.60x = 583,289.40 × 264,443.60
  4. Step 4: Simplify right side
    388,859.60x = 154,247,148,777.84
  5. Step 5: Solve for x
    x = 154,247,148,777.84/388,859.60
  6. Step 6: Final answer
    x = 396,665.40

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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.