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Finding the Fourth Proportional to 212,462.47, 318,745.18 and 62,699.45

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Solution

The fourth proportional to 212,462.47, 318,745.18 and 62,699.45 is: 94,064.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,462.47 : 318,745.18 = 62,699.45 : x
  2. Step 2: Convert to fraction form
    212,462.47/318,745.18 = 62,699.45/x
  3. Step 3: Cross multiply
    212,462.47x = 318,745.18 × 62,699.45
  4. Step 4: Simplify right side
    212,462.47x = 19,985,145,960.80
  5. Step 5: Solve for x
    x = 19,985,145,960.80/212,462.47
  6. Step 6: Final answer
    x = 94,064.36

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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.