Home / 389,013.63-536,841.15-216,942.47

Finding the Fourth Proportional to 389,013.63, 536,841.15 and 216,942.47

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Solution

The fourth proportional to 389,013.63, 536,841.15 and 216,942.47 is: 299,381.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,013.63 : 536,841.15 = 216,942.47 : x
  2. Step 2: Convert to fraction form
    389,013.63/536,841.15 = 216,942.47/x
  3. Step 3: Cross multiply
    389,013.63x = 536,841.15 × 216,942.47
  4. Step 4: Simplify right side
    389,013.63x = 116,463,645,078.64
  5. Step 5: Solve for x
    x = 116,463,645,078.64/389,013.63
  6. Step 6: Final answer
    x = 299,381.91

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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.