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Finding the Fourth Proportional to 538,261.95, 742,473.03 and 320,324.51

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Solution

The fourth proportional to 538,261.95, 742,473.03 and 320,324.51 is: 441,852.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,261.95 : 742,473.03 = 320,324.51 : x
  2. Step 2: Convert to fraction form
    538,261.95/742,473.03 = 320,324.51/x
  3. Step 3: Cross multiply
    538,261.95x = 742,473.03 × 320,324.51
  4. Step 4: Simplify right side
    538,261.95x = 237,832,311,379.15
  5. Step 5: Solve for x
    x = 237,832,311,379.15/538,261.95
  6. Step 6: Final answer
    x = 441,852.36

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1.5x scale

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.