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Finding the Fourth Proportional to 388,900.60, 583,005.30 and 255,844.60

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Solution

The fourth proportional to 388,900.60, 583,005.30 and 255,844.60 is: 383,539.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,900.60 : 583,005.30 = 255,844.60 : x
  2. Step 2: Convert to fraction form
    388,900.60/583,005.30 = 255,844.60/x
  3. Step 3: Cross multiply
    388,900.60x = 583,005.30 × 255,844.60
  4. Step 4: Simplify right side
    388,900.60x = 149,158,757,776.38
  5. Step 5: Solve for x
    x = 149,158,757,776.38/388,900.60
  6. Step 6: Final answer
    x = 383,539.54

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1.5x scale

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.