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Finding the Fourth Proportional to 218,985.35, 328,477.49 and 52,773.35

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Solution

The fourth proportional to 218,985.35, 328,477.49 and 52,773.35 is: 79,159.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,985.35 : 328,477.49 = 52,773.35 : x
  2. Step 2: Convert to fraction form
    218,985.35/328,477.49 = 52,773.35/x
  3. Step 3: Cross multiply
    218,985.35x = 328,477.49 × 52,773.35
  4. Step 4: Simplify right side
    218,985.35x = 17,334,858,302.12
  5. Step 5: Solve for x
    x = 17,334,858,302.12/218,985.35
  6. Step 6: Final answer
    x = 79,159.90

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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.