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Finding the Fourth Proportional to 386,675.41, 579,874.71 and 133,888.03

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Solution

The fourth proportional to 386,675.41, 579,874.71 and 133,888.03 is: 200,784.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,675.41 : 579,874.71 = 133,888.03 : x
  2. Step 2: Convert to fraction form
    386,675.41/579,874.71 = 133,888.03/x
  3. Step 3: Cross multiply
    386,675.41x = 579,874.71 × 133,888.03
  4. Step 4: Simplify right side
    386,675.41x = 77,638,281,621.11
  5. Step 5: Solve for x
    x = 77,638,281,621.11/386,675.41
  6. Step 6: Final answer
    x = 200,784.12

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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.