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Finding the Fourth Proportional to 305,341.46, 421,359.81 and 171,196.82

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Solution

The fourth proportional to 305,341.46, 421,359.81 and 171,196.82 is: 236,245.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,341.46 : 421,359.81 = 171,196.82 : x
  2. Step 2: Convert to fraction form
    305,341.46/421,359.81 = 171,196.82/x
  3. Step 3: Cross multiply
    305,341.46x = 421,359.81 × 171,196.82
  4. Step 4: Simplify right side
    305,341.46x = 72,135,459,547.80
  5. Step 5: Solve for x
    x = 72,135,459,547.80/305,341.46
  6. Step 6: Final answer
    x = 236,245.22

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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.