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Finding the Fourth Proportional to 306,920.55, 460,379.61 and 138,243.33

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Solution

The fourth proportional to 306,920.55, 460,379.61 and 138,243.33 is: 207,364.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,920.55 : 460,379.61 = 138,243.33 : x
  2. Step 2: Convert to fraction form
    306,920.55/460,379.61 = 138,243.33/x
  3. Step 3: Cross multiply
    306,920.55x = 460,379.61 × 138,243.33
  4. Step 4: Simplify right side
    306,920.55x = 63,644,410,350.50
  5. Step 5: Solve for x
    x = 63,644,410,350.50/306,920.55
  6. Step 6: Final answer
    x = 207,364.45

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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.