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Finding the Fourth Proportional to 212,447.62, 318,726.11 and 62,681.86

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Solution

The fourth proportional to 212,447.62, 318,726.11 and 62,681.86 is: 94,038.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,447.62 : 318,726.11 = 62,681.86 : x
  2. Step 2: Convert to fraction form
    212,447.62/318,726.11 = 62,681.86/x
  3. Step 3: Cross multiply
    212,447.62x = 318,726.11 × 62,681.86
  4. Step 4: Simplify right side
    212,447.62x = 19,978,345,405.36
  5. Step 5: Solve for x
    x = 19,978,345,405.36/212,447.62
  6. Step 6: Final answer
    x = 94,038.92

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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.