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Finding the Fourth Proportional to 230,367.90, 317,933.43 and 128,402.67

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Solution

The fourth proportional to 230,367.90, 317,933.43 and 128,402.67 is: 177,210.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,367.90 : 317,933.43 = 128,402.67 : x
  2. Step 2: Convert to fraction form
    230,367.90/317,933.43 = 128,402.67/x
  3. Step 3: Cross multiply
    230,367.90x = 317,933.43 × 128,402.67
  4. Step 4: Simplify right side
    230,367.90x = 40,823,501,294.26
  5. Step 5: Solve for x
    x = 40,823,501,294.26/230,367.90
  6. Step 6: Final answer
    x = 177,210.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.