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Finding the Fourth Proportional to 344,968, 517,454.36 and 131,678.40

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Solution

The fourth proportional to 344,968, 517,454.36 and 131,678.40 is: 197,518.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,968 : 517,454.36 = 131,678.40 : x
  2. Step 2: Convert to fraction form
    344,968/517,454.36 = 131,678.40/x
  3. Step 3: Cross multiply
    344,968x = 517,454.36 × 131,678.40
  4. Step 4: Simplify right side
    344,968x = 68,137,562,197.82
  5. Step 5: Solve for x
    x = 68,137,562,197.82/344,968
  6. Step 6: Final answer
    x = 197,518.50

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1.5x scale

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.