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Finding the Fourth Proportional to 358,428.70, 494,627.69 and 197,280.28

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Solution

The fourth proportional to 358,428.70, 494,627.69 and 197,280.28 is: 272,244.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,428.70 : 494,627.69 = 197,280.28 : x
  2. Step 2: Convert to fraction form
    358,428.70/494,627.69 = 197,280.28/x
  3. Step 3: Cross multiply
    358,428.70x = 494,627.69 × 197,280.28
  4. Step 4: Simplify right side
    358,428.70x = 97,580,289,178.95
  5. Step 5: Solve for x
    x = 97,580,289,178.95/358,428.70
  6. Step 6: Final answer
    x = 272,244.63

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1.5x scale

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.