Home / 638,148.60-957,158.10-217,418.40

Finding the Fourth Proportional to 638,148.60, 957,158.10 and 217,418.40

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Solution

The fourth proportional to 638,148.60, 957,158.10 and 217,418.40 is: 326,105.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,148.60 : 957,158.10 = 217,418.40 : x
  2. Step 2: Convert to fraction form
    638,148.60/957,158.10 = 217,418.40/x
  3. Step 3: Cross multiply
    638,148.60x = 957,158.10 × 217,418.40
  4. Step 4: Simplify right side
    638,148.60x = 208,103,782,649.04
  5. Step 5: Solve for x
    x = 208,103,782,649.04/638,148.60
  6. Step 6: Final answer
    x = 326,105.52

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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.