Home / 312,931.45-469,455.60-142,165.15

Finding the Fourth Proportional to 312,931.45, 469,455.60 and 142,165.15

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Solution

The fourth proportional to 312,931.45, 469,455.60 and 142,165.15 is: 213,274.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,931.45 : 469,455.60 = 142,165.15 : x
  2. Step 2: Convert to fraction form
    312,931.45/469,455.60 = 142,165.15/x
  3. Step 3: Cross multiply
    312,931.45x = 469,455.60 × 142,165.15
  4. Step 4: Simplify right side
    312,931.45x = 66,740,222,734.24
  5. Step 5: Solve for x
    x = 66,740,222,734.24/312,931.45
  6. Step 6: Final answer
    x = 213,274.26

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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.