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Finding the Fourth Proportional to 212,607.52, 318,911.72 and 199,616.74

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Solution

The fourth proportional to 212,607.52, 318,911.72 and 199,616.74 is: 299,425.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,607.52 : 318,911.72 = 199,616.74 : x
  2. Step 2: Convert to fraction form
    212,607.52/318,911.72 = 199,616.74/x
  3. Step 3: Cross multiply
    212,607.52x = 318,911.72 × 199,616.74
  4. Step 4: Simplify right side
    212,607.52x = 63,660,116,098.83
  5. Step 5: Solve for x
    x = 63,660,116,098.83/212,607.52
  6. Step 6: Final answer
    x = 299,425.52

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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.