Home / 388,923.60-583,288.20-148,985.40

Finding the Fourth Proportional to 388,923.60, 583,288.20 and 148,985.40

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Solution

The fourth proportional to 388,923.60, 583,288.20 and 148,985.40 is: 223,440.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,923.60 : 583,288.20 = 148,985.40 : x
  2. Step 2: Convert to fraction form
    388,923.60/583,288.20 = 148,985.40/x
  3. Step 3: Cross multiply
    388,923.60x = 583,288.20 × 148,985.40
  4. Step 4: Simplify right side
    388,923.60x = 86,901,425,792.28
  5. Step 5: Solve for x
    x = 86,901,425,792.28/388,923.60
  6. Step 6: Final answer
    x = 223,440.87

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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.