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Finding the Fourth Proportional to 228,317.40, 342,476.10 and 123,341.40

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Solution

The fourth proportional to 228,317.40, 342,476.10 and 123,341.40 is: 185,012.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,317.40 : 342,476.10 = 123,341.40 : x
  2. Step 2: Convert to fraction form
    228,317.40/342,476.10 = 123,341.40/x
  3. Step 3: Cross multiply
    228,317.40x = 342,476.10 × 123,341.40
  4. Step 4: Simplify right side
    228,317.40x = 42,241,481,640.54
  5. Step 5: Solve for x
    x = 42,241,481,640.54/228,317.40
  6. Step 6: Final answer
    x = 185,012.10

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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.