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Finding the Fourth Proportional to 296,428.96, 409,071.12 and 162,292

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Solution

The fourth proportional to 296,428.96, 409,071.12 and 162,292 is: 223,962.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,428.96 : 409,071.12 = 162,292 : x
  2. Step 2: Convert to fraction form
    296,428.96/409,071.12 = 162,292/x
  3. Step 3: Cross multiply
    296,428.96x = 409,071.12 × 162,292
  4. Step 4: Simplify right side
    296,428.96x = 66,388,970,207.04
  5. Step 5: Solve for x
    x = 66,388,970,207.04/296,428.96
  6. Step 6: Final answer
    x = 223,962.50

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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.