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Finding the Fourth Proportional to 612,429.77, 918,585.26 and 185,969.28

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Solution

The fourth proportional to 612,429.77, 918,585.26 and 185,969.28 is: 278,935.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,429.77 : 918,585.26 = 185,969.28 : x
  2. Step 2: Convert to fraction form
    612,429.77/918,585.26 = 185,969.28/x
  3. Step 3: Cross multiply
    612,429.77x = 918,585.26 × 185,969.28
  4. Step 4: Simplify right side
    612,429.77x = 170,828,641,935.66
  5. Step 5: Solve for x
    x = 170,828,641,935.66/612,429.77
  6. Step 6: Final answer
    x = 278,935.89

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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.