Home / 388,915.60-583,276.20-148,977.40

Finding the Fourth Proportional to 388,915.60, 583,276.20 and 148,977.40

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Solution

The fourth proportional to 388,915.60, 583,276.20 and 148,977.40 is: 223,428.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,915.60 : 583,276.20 = 148,977.40 : x
  2. Step 2: Convert to fraction form
    388,915.60/583,276.20 = 148,977.40/x
  3. Step 3: Cross multiply
    388,915.60x = 583,276.20 × 148,977.40
  4. Step 4: Simplify right side
    388,915.60x = 86,894,971,757.88
  5. Step 5: Solve for x
    x = 86,894,971,757.88/388,915.60
  6. Step 6: Final answer
    x = 223,428.87

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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.