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Finding the Fourth Proportional to 286,779.21, 395,752.91 and 159,453.69

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Solution

The fourth proportional to 286,779.21, 395,752.91 and 159,453.69 is: 220,044.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,779.21 : 395,752.91 = 159,453.69 : x
  2. Step 2: Convert to fraction form
    286,779.21/395,752.91 = 159,453.69/x
  3. Step 3: Cross multiply
    286,779.21x = 395,752.91 × 159,453.69
  4. Step 4: Simplify right side
    286,779.21x = 63,104,261,827.74
  5. Step 5: Solve for x
    x = 63,104,261,827.74/286,779.21
  6. Step 6: Final answer
    x = 220,044.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.