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Finding the Fourth Proportional to 253,142.01, 349,325.51 and 145,715.85

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Solution

The fourth proportional to 253,142.01, 349,325.51 and 145,715.85 is: 201,081.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,142.01 : 349,325.51 = 145,715.85 : x
  2. Step 2: Convert to fraction form
    253,142.01/349,325.51 = 145,715.85/x
  3. Step 3: Cross multiply
    253,142.01x = 349,325.51 × 145,715.85
  4. Step 4: Simplify right side
    253,142.01x = 50,902,262,887.75
  5. Step 5: Solve for x
    x = 50,902,262,887.75/253,142.01
  6. Step 6: Final answer
    x = 201,081.85

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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.