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Finding the Fourth Proportional to 312,389.43, 468,602.33 and 87,767.39

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Solution

The fourth proportional to 312,389.43, 468,602.33 and 87,767.39 is: 131,656.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,389.43 : 468,602.33 = 87,767.39 : x
  2. Step 2: Convert to fraction form
    312,389.43/468,602.33 = 87,767.39/x
  3. Step 3: Cross multiply
    312,389.43x = 468,602.33 × 87,767.39
  4. Step 4: Simplify right side
    312,389.43x = 41,128,000,670.17
  5. Step 5: Solve for x
    x = 41,128,000,670.17/312,389.43
  6. Step 6: Final answer
    x = 131,656.19

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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.