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Finding the Fourth Proportional to 345,516.59, 518,348.68 and 120,884.35

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Solution

The fourth proportional to 345,516.59, 518,348.68 and 120,884.35 is: 181,352.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,516.59 : 518,348.68 = 120,884.35 : x
  2. Step 2: Convert to fraction form
    345,516.59/518,348.68 = 120,884.35/x
  3. Step 3: Cross multiply
    345,516.59x = 518,348.68 × 120,884.35
  4. Step 4: Simplify right side
    345,516.59x = 62,660,242,650.74
  5. Step 5: Solve for x
    x = 62,660,242,650.74/345,516.59
  6. Step 6: Final answer
    x = 181,352.34

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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.