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Finding the Fourth Proportional to 103,498.70, 155,218 and 40,304.70

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Solution

The fourth proportional to 103,498.70, 155,218 and 40,304.70 is: 60,445.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,498.70 : 155,218 = 40,304.70 : x
  2. Step 2: Convert to fraction form
    103,498.70/155,218 = 40,304.70/x
  3. Step 3: Cross multiply
    103,498.70x = 155,218 × 40,304.70
  4. Step 4: Simplify right side
    103,498.70x = 6,256,014,924.60
  5. Step 5: Solve for x
    x = 6,256,014,924.60/103,498.70
  6. Step 6: Final answer
    x = 60,445.35

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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.