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Finding the Fourth Proportional to 212,655.76, 319,046 and 62,900

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Solution

The fourth proportional to 212,655.76, 319,046 and 62,900 is: 94,368.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,655.76 : 319,046 = 62,900 : x
  2. Step 2: Convert to fraction form
    212,655.76/319,046 = 62,900/x
  3. Step 3: Cross multiply
    212,655.76x = 319,046 × 62,900
  4. Step 4: Simplify right side
    212,655.76x = 20,067,993,400
  5. Step 5: Solve for x
    x = 20,067,993,400/212,655.76
  6. Step 6: Final answer
    x = 94,368.45

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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.