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Finding the Fourth Proportional to 312,389.52, 468,602.43 and 87,767.46

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Solution

The fourth proportional to 312,389.52, 468,602.43 and 87,767.46 is: 131,656.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,389.52 : 468,602.43 = 87,767.46 : x
  2. Step 2: Convert to fraction form
    312,389.52/468,602.43 = 87,767.46/x
  3. Step 3: Cross multiply
    312,389.52x = 468,602.43 × 87,767.46
  4. Step 4: Simplify right side
    312,389.52x = 41,128,045,030.93
  5. Step 5: Solve for x
    x = 41,128,045,030.93/312,389.52
  6. Step 6: Final answer
    x = 131,656.29

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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.