Home / 419,349.18-578,711.10-228,362.58

Finding the Fourth Proportional to 419,349.18, 578,711.10 and 228,362.58

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Solution

The fourth proportional to 419,349.18, 578,711.10 and 228,362.58 is: 315,145.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,349.18 : 578,711.10 = 228,362.58 : x
  2. Step 2: Convert to fraction form
    419,349.18/578,711.10 = 228,362.58/x
  3. Step 3: Cross multiply
    419,349.18x = 578,711.10 × 228,362.58
  4. Step 4: Simplify right side
    419,349.18x = 132,155,959,870.64
  5. Step 5: Solve for x
    x = 132,155,959,870.64/419,349.18
  6. Step 6: Final answer
    x = 315,145.39

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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.