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Finding the Fourth Proportional to 212,903.60, 319,614.60 and 107,668.40

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Solution

The fourth proportional to 212,903.60, 319,614.60 and 107,668.40 is: 161,633.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,903.60 : 319,614.60 = 107,668.40 : x
  2. Step 2: Convert to fraction form
    212,903.60/319,614.60 = 107,668.40/x
  3. Step 3: Cross multiply
    212,903.60x = 319,614.60 × 107,668.40
  4. Step 4: Simplify right side
    212,903.60x = 34,412,392,598.64
  5. Step 5: Solve for x
    x = 34,412,392,598.64/212,903.60
  6. Step 6: Final answer
    x = 161,633.68

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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.