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Finding the Fourth Proportional to 306,341.83, 422,719.34 and 170,353.80

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Solution

The fourth proportional to 306,341.83, 422,719.34 and 170,353.80 is: 235,070.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,341.83 : 422,719.34 = 170,353.80 : x
  2. Step 2: Convert to fraction form
    306,341.83/422,719.34 = 170,353.80/x
  3. Step 3: Cross multiply
    306,341.83x = 422,719.34 × 170,353.80
  4. Step 4: Simplify right side
    306,341.83x = 72,011,845,050.72
  5. Step 5: Solve for x
    x = 72,011,845,050.72/306,341.83
  6. Step 6: Final answer
    x = 235,070.23

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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.