Home / 419,159.21-578,443.28-228,172.14

Finding the Fourth Proportional to 419,159.21, 578,443.28 and 228,172.14

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Solution

The fourth proportional to 419,159.21, 578,443.28 and 228,172.14 is: 314,879.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,159.21 : 578,443.28 = 228,172.14 : x
  2. Step 2: Convert to fraction form
    419,159.21/578,443.28 = 228,172.14/x
  3. Step 3: Cross multiply
    419,159.21x = 578,443.28 × 228,172.14
  4. Step 4: Simplify right side
    419,159.21x = 131,984,639,925.36
  5. Step 5: Solve for x
    x = 131,984,639,925.36/419,159.21
  6. Step 6: Final answer
    x = 314,879.50

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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.