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Finding the Fourth Proportional to 312,374.10, 468,556.98 and 75,718.80

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Solution

The fourth proportional to 312,374.10, 468,556.98 and 75,718.80 is: 113,577.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,374.10 : 468,556.98 = 75,718.80 : x
  2. Step 2: Convert to fraction form
    312,374.10/468,556.98 = 75,718.80/x
  3. Step 3: Cross multiply
    312,374.10x = 468,556.98 × 75,718.80
  4. Step 4: Simplify right side
    312,374.10x = 35,478,572,257.22
  5. Step 5: Solve for x
    x = 35,478,572,257.22/312,374.10
  6. Step 6: Final answer
    x = 113,577.19

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1.5x scale

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.