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Finding the Fourth Proportional to 612,429.91, 918,585.47 and 185,969.42

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Solution

The fourth proportional to 612,429.91, 918,585.47 and 185,969.42 is: 278,936.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,429.91 : 918,585.47 = 185,969.42 : x
  2. Step 2: Convert to fraction form
    612,429.91/918,585.47 = 185,969.42/x
  3. Step 3: Cross multiply
    612,429.91x = 918,585.47 × 185,969.42
  4. Step 4: Simplify right side
    612,429.91x = 170,828,810,165.29
  5. Step 5: Solve for x
    x = 170,828,810,165.29/612,429.91
  6. Step 6: Final answer
    x = 278,936.10

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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.