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Finding the Fourth Proportional to 287,457.96, 431,186.94 and 110,019.36

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Solution

The fourth proportional to 287,457.96, 431,186.94 and 110,019.36 is: 165,029.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,457.96 : 431,186.94 = 110,019.36 : x
  2. Step 2: Convert to fraction form
    287,457.96/431,186.94 = 110,019.36/x
  3. Step 3: Cross multiply
    287,457.96x = 431,186.94 × 110,019.36
  4. Step 4: Simplify right side
    287,457.96x = 47,438,911,179.16
  5. Step 5: Solve for x
    x = 47,438,911,179.16/287,457.96
  6. Step 6: Final answer
    x = 165,029.04

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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.