Home / 219,621.60-328,703.40-159,479.10

Finding the Fourth Proportional to 219,621.60, 328,703.40 and 159,479.10

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Solution

The fourth proportional to 219,621.60, 328,703.40 and 159,479.10 is: 238,689.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,621.60 : 328,703.40 = 159,479.10 : x
  2. Step 2: Convert to fraction form
    219,621.60/328,703.40 = 159,479.10/x
  3. Step 3: Cross multiply
    219,621.60x = 328,703.40 × 159,479.10
  4. Step 4: Simplify right side
    219,621.60x = 52,421,322,398.94
  5. Step 5: Solve for x
    x = 52,421,322,398.94/219,621.60
  6. Step 6: Final answer
    x = 238,689.28

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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.