Home / 538,002.86-742,276.44-305,391.11

Finding the Fourth Proportional to 538,002.86, 742,276.44 and 305,391.11

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Solution

The fourth proportional to 538,002.86, 742,276.44 and 305,391.11 is: 421,344.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,002.86 : 742,276.44 = 305,391.11 : x
  2. Step 2: Convert to fraction form
    538,002.86/742,276.44 = 305,391.11/x
  3. Step 3: Cross multiply
    538,002.86x = 742,276.44 × 305,391.11
  4. Step 4: Simplify right side
    538,002.86x = 226,684,625,938.45
  5. Step 5: Solve for x
    x = 226,684,625,938.45/538,002.86
  6. Step 6: Final answer
    x = 421,344.65

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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.