Home / 419,029.50-578,249.63-228,038.79

Finding the Fourth Proportional to 419,029.50, 578,249.63 and 228,038.79

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Solution

The fourth proportional to 419,029.50, 578,249.63 and 228,038.79 is: 314,687.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,029.50 : 578,249.63 = 228,038.79 : x
  2. Step 2: Convert to fraction form
    419,029.50/578,249.63 = 228,038.79/x
  3. Step 3: Cross multiply
    419,029.50x = 578,249.63 × 228,038.79
  4. Step 4: Simplify right side
    419,029.50x = 131,863,349,109.25
  5. Step 5: Solve for x
    x = 131,863,349,109.25/419,029.50
  6. Step 6: Final answer
    x = 314,687.51

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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.