Home / 487,961.10-731,905.20-203,578.20

Finding the Fourth Proportional to 487,961.10, 731,905.20 and 203,578.20

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Solution

The fourth proportional to 487,961.10, 731,905.20 and 203,578.20 is: 305,352.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,961.10 : 731,905.20 = 203,578.20 : x
  2. Step 2: Convert to fraction form
    487,961.10/731,905.20 = 203,578.20/x
  3. Step 3: Cross multiply
    487,961.10x = 731,905.20 × 203,578.20
  4. Step 4: Simplify right side
    487,961.10x = 148,999,943,186.64
  5. Step 5: Solve for x
    x = 148,999,943,186.64/487,961.10
  6. Step 6: Final answer
    x = 305,352.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.