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Finding the Fourth Proportional to 538,332.02, 807,501.08 and 138,945.48

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Solution

The fourth proportional to 538,332.02, 807,501.08 and 138,945.48 is: 208,419.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,332.02 : 807,501.08 = 138,945.48 : x
  2. Step 2: Convert to fraction form
    538,332.02/807,501.08 = 138,945.48/x
  3. Step 3: Cross multiply
    538,332.02x = 807,501.08 × 138,945.48
  4. Step 4: Simplify right side
    538,332.02x = 112,198,625,161.12
  5. Step 5: Solve for x
    x = 112,198,625,161.12/538,332.02
  6. Step 6: Final answer
    x = 208,419.01

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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.