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Finding the Fourth Proportional to 219,121, 302,387.52 and 118,519

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Solution

The fourth proportional to 219,121, 302,387.52 and 118,519 is: 163,556.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,121 : 302,387.52 = 118,519 : x
  2. Step 2: Convert to fraction form
    219,121/302,387.52 = 118,519/x
  3. Step 3: Cross multiply
    219,121x = 302,387.52 × 118,519
  4. Step 4: Simplify right side
    219,121x = 35,838,666,482.88
  5. Step 5: Solve for x
    x = 35,838,666,482.88/219,121
  6. Step 6: Final answer
    x = 163,556.51

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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.