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Finding the Fourth Proportional to 253,188.40, 349,442.96 and 145,820.59

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Solution

The fourth proportional to 253,188.40, 349,442.96 and 145,820.59 is: 201,257.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,188.40 : 349,442.96 = 145,820.59 : x
  2. Step 2: Convert to fraction form
    253,188.40/349,442.96 = 145,820.59/x
  3. Step 3: Cross multiply
    253,188.40x = 349,442.96 × 145,820.59
  4. Step 4: Simplify right side
    253,188.40x = 50,955,978,743.05
  5. Step 5: Solve for x
    x = 50,955,978,743.05/253,188.40
  6. Step 6: Final answer
    x = 201,257.16

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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.