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Finding the Fourth Proportional to 274,367.40, 378,641.73 and 153,501.49

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Solution

The fourth proportional to 274,367.40, 378,641.73 and 153,501.49 is: 211,840.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,367.40 : 378,641.73 = 153,501.49 : x
  2. Step 2: Convert to fraction form
    274,367.40/378,641.73 = 153,501.49/x
  3. Step 3: Cross multiply
    274,367.40x = 378,641.73 × 153,501.49
  4. Step 4: Simplify right side
    274,367.40x = 58,122,069,731.18
  5. Step 5: Solve for x
    x = 58,122,069,731.18/274,367.40
  6. Step 6: Final answer
    x = 211,840.29

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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.