Home / 419,743.12-579,228.60-228,752.40

Finding the Fourth Proportional to 419,743.12, 579,228.60 and 228,752.40

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Solution

The fourth proportional to 419,743.12, 579,228.60 and 228,752.40 is: 315,669.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,743.12 : 579,228.60 = 228,752.40 : x
  2. Step 2: Convert to fraction form
    419,743.12/579,228.60 = 228,752.40/x
  3. Step 3: Cross multiply
    419,743.12x = 579,228.60 × 228,752.40
  4. Step 4: Simplify right side
    419,743.12x = 132,499,932,398.64
  5. Step 5: Solve for x
    x = 132,499,932,398.64/419,743.12
  6. Step 6: Final answer
    x = 315,669.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.