Home / 409,511.49-565,142.19-228,221.80

Finding the Fourth Proportional to 409,511.49, 565,142.19 and 228,221.80

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Solution

The fourth proportional to 409,511.49, 565,142.19 and 228,221.80 is: 314,955.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,511.49 : 565,142.19 = 228,221.80 : x
  2. Step 2: Convert to fraction form
    409,511.49/565,142.19 = 228,221.80/x
  3. Step 3: Cross multiply
    409,511.49x = 565,142.19 × 228,221.80
  4. Step 4: Simplify right side
    409,511.49x = 128,977,766,444.89
  5. Step 5: Solve for x
    x = 128,977,766,444.89/409,511.49
  6. Step 6: Final answer
    x = 314,955.18

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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.