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Finding the Fourth Proportional to 400,562.61, 600,849.95 and 130,689.51

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Solution

The fourth proportional to 400,562.61, 600,849.95 and 130,689.51 is: 196,036.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,562.61 : 600,849.95 = 130,689.51 : x
  2. Step 2: Convert to fraction form
    400,562.61/600,849.95 = 130,689.51/x
  3. Step 3: Cross multiply
    400,562.61x = 600,849.95 × 130,689.51
  4. Step 4: Simplify right side
    400,562.61x = 78,524,784,895.58
  5. Step 5: Solve for x
    x = 78,524,784,895.58/400,562.61
  6. Step 6: Final answer
    x = 196,036.23

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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.