Home / 419,035.91-578,258.48-228,045.20

Finding the Fourth Proportional to 419,035.91, 578,258.48 and 228,045.20

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Solution

The fourth proportional to 419,035.91, 578,258.48 and 228,045.20 is: 314,696.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,035.91 : 578,258.48 = 228,045.20 : x
  2. Step 2: Convert to fraction form
    419,035.91/578,258.48 = 228,045.20/x
  3. Step 3: Cross multiply
    419,035.91x = 578,258.48 × 228,045.20
  4. Step 4: Simplify right side
    419,035.91x = 131,869,069,583.07
  5. Step 5: Solve for x
    x = 131,869,069,583.07/419,035.91
  6. Step 6: Final answer
    x = 314,696.35

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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.