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Finding the Fourth Proportional to 345,394.48, 518,046.36 and 108,738.40

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Solution

The fourth proportional to 345,394.48, 518,046.36 and 108,738.40 is: 163,093.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,394.48 : 518,046.36 = 108,738.40 : x
  2. Step 2: Convert to fraction form
    345,394.48/518,046.36 = 108,738.40/x
  3. Step 3: Cross multiply
    345,394.48x = 518,046.36 × 108,738.40
  4. Step 4: Simplify right side
    345,394.48x = 56,331,532,312.22
  5. Step 5: Solve for x
    x = 56,331,532,312.22/345,394.48
  6. Step 6: Final answer
    x = 163,093.32

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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.