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Finding the Fourth Proportional to 292,421.20, 438,048.60 and 167,616.40

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Solution

The fourth proportional to 292,421.20, 438,048.60 and 167,616.40 is: 251,090.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,421.20 : 438,048.60 = 167,616.40 : x
  2. Step 2: Convert to fraction form
    292,421.20/438,048.60 = 167,616.40/x
  3. Step 3: Cross multiply
    292,421.20x = 438,048.60 × 167,616.40
  4. Step 4: Simplify right side
    292,421.20x = 73,424,129,357.04
  5. Step 5: Solve for x
    x = 73,424,129,357.04/292,421.20
  6. Step 6: Final answer
    x = 251,090.31

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