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Finding the Fourth Proportional to 253,173, 379,842.70 and 103,539.16

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Solution

The fourth proportional to 253,173, 379,842.70 and 103,539.16 is: 155,342.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,173 : 379,842.70 = 103,539.16 : x
  2. Step 2: Convert to fraction form
    253,173/379,842.70 = 103,539.16/x
  3. Step 3: Cross multiply
    253,173x = 379,842.70 × 103,539.16
  4. Step 4: Simplify right side
    253,173x = 39,328,594,090.13
  5. Step 5: Solve for x
    x = 39,328,594,090.13/253,173
  6. Step 6: Final answer
    x = 155,342.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.