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Finding the Fourth Proportional to 312,508.48, 468,688.08 and 134,918.32

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Solution

The fourth proportional to 312,508.48, 468,688.08 and 134,918.32 is: 202,345.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,508.48 : 468,688.08 = 134,918.32 : x
  2. Step 2: Convert to fraction form
    312,508.48/468,688.08 = 134,918.32/x
  3. Step 3: Cross multiply
    312,508.48x = 468,688.08 × 134,918.32
  4. Step 4: Simplify right side
    312,508.48x = 63,234,608,357.63
  5. Step 5: Solve for x
    x = 63,234,608,357.63/312,508.48
  6. Step 6: Final answer
    x = 202,345.26

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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.