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Finding the Fourth Proportional to 312,351.10, 468,388.14 and 143,830.60

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Solution

The fourth proportional to 312,351.10, 468,388.14 and 143,830.60 is: 215,682.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,351.10 : 468,388.14 = 143,830.60 : x
  2. Step 2: Convert to fraction form
    312,351.10/468,388.14 = 143,830.60/x
  3. Step 3: Cross multiply
    312,351.10x = 468,388.14 × 143,830.60
  4. Step 4: Simplify right side
    312,351.10x = 67,368,547,209.08
  5. Step 5: Solve for x
    x = 67,368,547,209.08/312,351.10
  6. Step 6: Final answer
    x = 215,682.12

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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.