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Finding the Fourth Proportional to 388,974.40, 583,231.20 and 202,350.40

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Solution

The fourth proportional to 388,974.40, 583,231.20 and 202,350.40 is: 303,405.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,974.40 : 583,231.20 = 202,350.40 : x
  2. Step 2: Convert to fraction form
    388,974.40/583,231.20 = 202,350.40/x
  3. Step 3: Cross multiply
    388,974.40x = 583,231.20 × 202,350.40
  4. Step 4: Simplify right side
    388,974.40x = 118,017,066,612.48
  5. Step 5: Solve for x
    x = 118,017,066,612.48/388,974.40
  6. Step 6: Final answer
    x = 303,405.74

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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.