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Finding the Fourth Proportional to 212,645.54, 318,968.67 and 199,654.76

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Solution

The fourth proportional to 212,645.54, 318,968.67 and 199,654.76 is: 299,482.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,645.54 : 318,968.67 = 199,654.76 : x
  2. Step 2: Convert to fraction form
    212,645.54/318,968.67 = 199,654.76/x
  3. Step 3: Cross multiply
    212,645.54x = 318,968.67 × 199,654.76
  4. Step 4: Simplify right side
    212,645.54x = 63,683,613,256.37
  5. Step 5: Solve for x
    x = 63,683,613,256.37/212,645.54
  6. Step 6: Final answer
    x = 299,482.48

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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.