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Finding the Fourth Proportional to 388,892.60, 583,241.70 and 148,954.40

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Solution

The fourth proportional to 388,892.60, 583,241.70 and 148,954.40 is: 223,394.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,892.60 : 583,241.70 = 148,954.40 : x
  2. Step 2: Convert to fraction form
    388,892.60/583,241.70 = 148,954.40/x
  3. Step 3: Cross multiply
    388,892.60x = 583,241.70 × 148,954.40
  4. Step 4: Simplify right side
    388,892.60x = 86,876,417,478.48
  5. Step 5: Solve for x
    x = 86,876,417,478.48/388,892.60
  6. Step 6: Final answer
    x = 223,394.37

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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.