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Finding the Fourth Proportional to 384,888.18, 531,124.16 and 212,796.12

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Solution

The fourth proportional to 384,888.18, 531,124.16 and 212,796.12 is: 293,646.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,888.18 : 531,124.16 = 212,796.12 : x
  2. Step 2: Convert to fraction form
    384,888.18/531,124.16 = 212,796.12/x
  3. Step 3: Cross multiply
    384,888.18x = 531,124.16 × 212,796.12
  4. Step 4: Simplify right side
    384,888.18x = 113,021,159,422.28
  5. Step 5: Solve for x
    x = 113,021,159,422.28/384,888.18
  6. Step 6: Final answer
    x = 293,646.74

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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.