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Finding the Fourth Proportional to 247,000.53, 340,672.65 and 212,603.80

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Solution

The fourth proportional to 247,000.53, 340,672.65 and 212,603.80 is: 293,231.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,000.53 : 340,672.65 = 212,603.80 : x
  2. Step 2: Convert to fraction form
    247,000.53/340,672.65 = 212,603.80/x
  3. Step 3: Cross multiply
    247,000.53x = 340,672.65 × 212,603.80
  4. Step 4: Simplify right side
    247,000.53x = 72,428,299,946.07
  5. Step 5: Solve for x
    x = 72,428,299,946.07/247,000.53
  6. Step 6: Final answer
    x = 293,231.35

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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.