Home / 287,777.38-397,137.72-158,730.68

Finding the Fourth Proportional to 287,777.38, 397,137.72 and 158,730.68

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Solution

The fourth proportional to 287,777.38, 397,137.72 and 158,730.68 is: 219,051.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,777.38 : 397,137.72 = 158,730.68 : x
  2. Step 2: Convert to fraction form
    287,777.38/397,137.72 = 158,730.68/x
  3. Step 3: Cross multiply
    287,777.38x = 397,137.72 × 158,730.68
  4. Step 4: Simplify right side
    287,777.38x = 63,037,940,349.25
  5. Step 5: Solve for x
    x = 63,037,940,349.25/287,777.38
  6. Step 6: Final answer
    x = 219,051.06

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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.