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Finding the Fourth Proportional to 353,020, 487,167.60 and 194,044

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Solution

The fourth proportional to 353,020, 487,167.60 and 194,044 is: 267,780.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,020 : 487,167.60 = 194,044 : x
  2. Step 2: Convert to fraction form
    353,020/487,167.60 = 194,044/x
  3. Step 3: Cross multiply
    353,020x = 487,167.60 × 194,044
  4. Step 4: Simplify right side
    353,020x = 94,531,949,774.40
  5. Step 5: Solve for x
    x = 94,531,949,774.40/353,020
  6. Step 6: Final answer
    x = 267,780.72

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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.