Home / 419,985.59-579,580.70-228,998.98

Finding the Fourth Proportional to 419,985.59, 579,580.70 and 228,998.98

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Solution

The fourth proportional to 419,985.59, 579,580.70 and 228,998.98 is: 316,018.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,985.59 : 579,580.70 = 228,998.98 : x
  2. Step 2: Convert to fraction form
    419,985.59/579,580.70 = 228,998.98/x
  3. Step 3: Cross multiply
    419,985.59x = 579,580.70 × 228,998.98
  4. Step 4: Simplify right side
    419,985.59x = 132,723,386,533.74
  5. Step 5: Solve for x
    x = 132,723,386,533.74/419,985.59
  6. Step 6: Final answer
    x = 316,018.90

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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.