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Finding the Fourth Proportional to 390,262.29, 538,651.95 and 254,059.01

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Solution

The fourth proportional to 390,262.29, 538,651.95 and 254,059.01 is: 350,660.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,262.29 : 538,651.95 = 254,059.01 : x
  2. Step 2: Convert to fraction form
    390,262.29/538,651.95 = 254,059.01/x
  3. Step 3: Cross multiply
    390,262.29x = 538,651.95 × 254,059.01
  4. Step 4: Simplify right side
    390,262.29x = 136,849,378,725.12
  5. Step 5: Solve for x
    x = 136,849,378,725.12/390,262.29
  6. Step 6: Final answer
    x = 350,660.01

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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.