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Finding the Fourth Proportional to 388,903.60, 583,009.80 and 255,847.60

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Solution

The fourth proportional to 388,903.60, 583,009.80 and 255,847.60 is: 383,544.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,903.60 : 583,009.80 = 255,847.60 : x
  2. Step 2: Convert to fraction form
    388,903.60/583,009.80 = 255,847.60/x
  3. Step 3: Cross multiply
    388,903.60x = 583,009.80 × 255,847.60
  4. Step 4: Simplify right side
    388,903.60x = 149,161,658,106.48
  5. Step 5: Solve for x
    x = 149,161,658,106.48/388,903.60
  6. Step 6: Final answer
    x = 383,544.04

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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.