Home / 386,401.60-579,332.40-228,548.80

Finding the Fourth Proportional to 386,401.60, 579,332.40 and 228,548.80

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Solution

The fourth proportional to 386,401.60, 579,332.40 and 228,548.80 is: 342,663.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,401.60 : 579,332.40 = 228,548.80 : x
  2. Step 2: Convert to fraction form
    386,401.60/579,332.40 = 228,548.80/x
  3. Step 3: Cross multiply
    386,401.60x = 579,332.40 × 228,548.80
  4. Step 4: Simplify right side
    386,401.60x = 132,405,724,821.12
  5. Step 5: Solve for x
    x = 132,405,724,821.12/386,401.60
  6. Step 6: Final answer
    x = 342,663.50

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1.5x scale

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.