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Finding the Fourth Proportional to 228,355.52, 315,431.80 and 175,296.20

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Solution

The fourth proportional to 228,355.52, 315,431.80 and 175,296.20 is: 242,139.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,355.52 : 315,431.80 = 175,296.20 : x
  2. Step 2: Convert to fraction form
    228,355.52/315,431.80 = 175,296.20/x
  3. Step 3: Cross multiply
    228,355.52x = 315,431.80 × 175,296.20
  4. Step 4: Simplify right side
    228,355.52x = 55,293,995,899.16
  5. Step 5: Solve for x
    x = 55,293,995,899.16/228,355.52
  6. Step 6: Final answer
    x = 242,139.96

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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.