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Finding the Fourth Proportional to 345,210.82, 476,335.29 and 217,955.14

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Solution

The fourth proportional to 345,210.82, 476,335.29 and 217,955.14 is: 300,742.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,210.82 : 476,335.29 = 217,955.14 : x
  2. Step 2: Convert to fraction form
    345,210.82/476,335.29 = 217,955.14/x
  3. Step 3: Cross multiply
    345,210.82x = 476,335.29 × 217,955.14
  4. Step 4: Simplify right side
    345,210.82x = 103,819,724,818.89
  5. Step 5: Solve for x
    x = 103,819,724,818.89/345,210.82
  6. Step 6: Final answer
    x = 300,742.96

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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.