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Finding the Fourth Proportional to 288,044.80, 432,067.20 and 261,779.20

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Solution

The fourth proportional to 288,044.80, 432,067.20 and 261,779.20 is: 392,668.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,044.80 : 432,067.20 = 261,779.20 : x
  2. Step 2: Convert to fraction form
    288,044.80/432,067.20 = 261,779.20/x
  3. Step 3: Cross multiply
    288,044.80x = 432,067.20 × 261,779.20
  4. Step 4: Simplify right side
    288,044.80x = 113,106,205,962.24
  5. Step 5: Solve for x
    x = 113,106,205,962.24/288,044.80
  6. Step 6: Final answer
    x = 392,668.80

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1.5x scale

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.