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Finding the Fourth Proportional to 212,808.80, 293,678.10 and 117,318.92

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Solution

The fourth proportional to 212,808.80, 293,678.10 and 117,318.92 is: 161,901.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,808.80 : 293,678.10 = 117,318.92 : x
  2. Step 2: Convert to fraction form
    212,808.80/293,678.10 = 117,318.92/x
  3. Step 3: Cross multiply
    212,808.80x = 293,678.10 × 117,318.92
  4. Step 4: Simplify right side
    212,808.80x = 34,453,996,051.26
  5. Step 5: Solve for x
    x = 34,453,996,051.26/212,808.80
  6. Step 6: Final answer
    x = 161,901.18

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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.