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Finding the Fourth Proportional to 274,294.97, 378,509.28 and 153,415.34

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Solution

The fourth proportional to 274,294.97, 378,509.28 and 153,415.34 is: 211,703.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,294.97 : 378,509.28 = 153,415.34 : x
  2. Step 2: Convert to fraction form
    274,294.97/378,509.28 = 153,415.34/x
  3. Step 3: Cross multiply
    274,294.97x = 378,509.28 × 153,415.34
  4. Step 4: Simplify right side
    274,294.97x = 58,069,129,884.36
  5. Step 5: Solve for x
    x = 58,069,129,884.36/274,294.97
  6. Step 6: Final answer
    x = 211,703.23

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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.