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Finding the Fourth Proportional to 292,428.20, 438,059.10 and 167,623.40

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Solution

The fourth proportional to 292,428.20, 438,059.10 and 167,623.40 is: 251,100.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,428.20 : 438,059.10 = 167,623.40 : x
  2. Step 2: Convert to fraction form
    292,428.20/438,059.10 = 167,623.40/x
  3. Step 3: Cross multiply
    292,428.20x = 438,059.10 × 167,623.40
  4. Step 4: Simplify right side
    292,428.20x = 73,428,955,742.94
  5. Step 5: Solve for x
    x = 73,428,955,742.94/292,428.20
  6. Step 6: Final answer
    x = 251,100.80

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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.