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Finding the Fourth Proportional to 253,448.70, 349,720.11 and 145,997.70

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Solution

The fourth proportional to 253,448.70, 349,720.11 and 145,997.70 is: 201,454.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,448.70 : 349,720.11 = 145,997.70 : x
  2. Step 2: Convert to fraction form
    253,448.70/349,720.11 = 145,997.70/x
  3. Step 3: Cross multiply
    253,448.70x = 349,720.11 × 145,997.70
  4. Step 4: Simplify right side
    253,448.70x = 51,058,331,703.75
  5. Step 5: Solve for x
    x = 51,058,331,703.75/253,448.70
  6. Step 6: Final answer
    x = 201,454.30

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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.