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Finding the Fourth Proportional to 209,980.53, 315,034.38 and 75,026.93

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Solution

The fourth proportional to 209,980.53, 315,034.38 and 75,026.93 is: 112,563.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,980.53 : 315,034.38 = 75,026.93 : x
  2. Step 2: Convert to fraction form
    209,980.53/315,034.38 = 75,026.93/x
  3. Step 3: Cross multiply
    209,980.53x = 315,034.38 × 75,026.93
  4. Step 4: Simplify right side
    209,980.53x = 23,636,060,800.68
  5. Step 5: Solve for x
    x = 23,636,060,800.68/209,980.53
  6. Step 6: Final answer
    x = 112,563.11

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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.