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Finding the Fourth Proportional to 253,570.64, 349,926.28 and 137,284.20

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Solution

The fourth proportional to 253,570.64, 349,926.28 and 137,284.20 is: 189,451.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,570.64 : 349,926.28 = 137,284.20 : x
  2. Step 2: Convert to fraction form
    253,570.64/349,926.28 = 137,284.20/x
  3. Step 3: Cross multiply
    253,570.64x = 349,926.28 × 137,284.20
  4. Step 4: Simplify right side
    253,570.64x = 48,039,349,408.78
  5. Step 5: Solve for x
    x = 48,039,349,408.78/253,570.64
  6. Step 6: Final answer
    x = 189,451.54

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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.