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Finding the Fourth Proportional to 219,325.08, 328,986.54 and 53,113.08

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Solution

The fourth proportional to 219,325.08, 328,986.54 and 53,113.08 is: 79,669.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,325.08 : 328,986.54 = 53,113.08 : x
  2. Step 2: Convert to fraction form
    219,325.08/328,986.54 = 53,113.08/x
  3. Step 3: Cross multiply
    219,325.08x = 328,986.54 × 53,113.08
  4. Step 4: Simplify right side
    219,325.08x = 17,473,488,417.94
  5. Step 5: Solve for x
    x = 17,473,488,417.94/219,325.08
  6. Step 6: Final answer
    x = 79,669.36

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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.