Home / 219,029.10-328,543.65-85,913.70

Finding the Fourth Proportional to 219,029.10, 328,543.65 and 85,913.70

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Solution

The fourth proportional to 219,029.10, 328,543.65 and 85,913.70 is: 128,870.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,029.10 : 328,543.65 = 85,913.70 : x
  2. Step 2: Convert to fraction form
    219,029.10/328,543.65 = 85,913.70/x
  3. Step 3: Cross multiply
    219,029.10x = 328,543.65 × 85,913.70
  4. Step 4: Simplify right side
    219,029.10x = 28,226,400,583.01
  5. Step 5: Solve for x
    x = 28,226,400,583.01/219,029.10
  6. Step 6: Final answer
    x = 128,870.55

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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.