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Finding the Fourth Proportional to 353,996.84, 488,038 and 342,989.48

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Solution

The fourth proportional to 353,996.84, 488,038 and 342,989.48 is: 472,862.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,996.84 : 488,038 = 342,989.48 : x
  2. Step 2: Convert to fraction form
    353,996.84/488,038 = 342,989.48/x
  3. Step 3: Cross multiply
    353,996.84x = 488,038 × 342,989.48
  4. Step 4: Simplify right side
    353,996.84x = 167,391,899,840.24
  5. Step 5: Solve for x
    x = 167,391,899,840.24/353,996.84
  6. Step 6: Final answer
    x = 472,862.70

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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.