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Finding the Fourth Proportional to 288,045.30, 432,067.95 and 163,629.30

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Solution

The fourth proportional to 288,045.30, 432,067.95 and 163,629.30 is: 245,443.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,045.30 : 432,067.95 = 163,629.30 : x
  2. Step 2: Convert to fraction form
    288,045.30/432,067.95 = 163,629.30/x
  3. Step 3: Cross multiply
    288,045.30x = 432,067.95 × 163,629.30
  4. Step 4: Simplify right side
    288,045.30x = 70,698,976,210.94
  5. Step 5: Solve for x
    x = 70,698,976,210.94/288,045.30
  6. Step 6: Final answer
    x = 245,443.95

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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.