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Finding the Fourth Proportional to 253,037.59, 349,191.84 and 138,316.68

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Solution

The fourth proportional to 253,037.59, 349,191.84 and 138,316.68 is: 190,877.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,037.59 : 349,191.84 = 138,316.68 : x
  2. Step 2: Convert to fraction form
    253,037.59/349,191.84 = 138,316.68/x
  3. Step 3: Cross multiply
    253,037.59x = 349,191.84 × 138,316.68
  4. Step 4: Simplify right side
    253,037.59x = 48,299,057,492.68
  5. Step 5: Solve for x
    x = 48,299,057,492.68/253,037.59
  6. Step 6: Final answer
    x = 190,877.01

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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.