Home / 292,394.20-438,764.10-213,309.40

Finding the Fourth Proportional to 292,394.20, 438,764.10 and 213,309.40

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Solution

The fourth proportional to 292,394.20, 438,764.10 and 213,309.40 is: 320,090.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,394.20 : 438,764.10 = 213,309.40 : x
  2. Step 2: Convert to fraction form
    292,394.20/438,764.10 = 213,309.40/x
  3. Step 3: Cross multiply
    292,394.20x = 438,764.10 × 213,309.40
  4. Step 4: Simplify right side
    292,394.20x = 93,592,506,912.54
  5. Step 5: Solve for x
    x = 93,592,506,912.54/292,394.20
  6. Step 6: Final answer
    x = 320,090.16

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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.