Home / 388,919.60-583,282.20-148,981.40

Finding the Fourth Proportional to 388,919.60, 583,282.20 and 148,981.40

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Solution

The fourth proportional to 388,919.60, 583,282.20 and 148,981.40 is: 223,434.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,919.60 : 583,282.20 = 148,981.40 : x
  2. Step 2: Convert to fraction form
    388,919.60/583,282.20 = 148,981.40/x
  3. Step 3: Cross multiply
    388,919.60x = 583,282.20 × 148,981.40
  4. Step 4: Simplify right side
    388,919.60x = 86,898,198,751.08
  5. Step 5: Solve for x
    x = 86,898,198,751.08/388,919.60
  6. Step 6: Final answer
    x = 223,434.87

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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.