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Finding the Fourth Proportional to 262,434.36, 393,663.72 and 84,955.32

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Solution

The fourth proportional to 262,434.36, 393,663.72 and 84,955.32 is: 127,436.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,434.36 : 393,663.72 = 84,955.32 : x
  2. Step 2: Convert to fraction form
    262,434.36/393,663.72 = 84,955.32/x
  3. Step 3: Cross multiply
    262,434.36x = 393,663.72 × 84,955.32
  4. Step 4: Simplify right side
    262,434.36x = 33,443,827,304.99
  5. Step 5: Solve for x
    x = 33,443,827,304.99/262,434.36
  6. Step 6: Final answer
    x = 127,436.92

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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.