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Finding the Fourth Proportional to 365,306.64, 548,014.68 and 128,607.60

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Solution

The fourth proportional to 365,306.64, 548,014.68 and 128,607.60 is: 192,930.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,306.64 : 548,014.68 = 128,607.60 : x
  2. Step 2: Convert to fraction form
    365,306.64/548,014.68 = 128,607.60/x
  3. Step 3: Cross multiply
    365,306.64x = 548,014.68 × 128,607.60
  4. Step 4: Simplify right side
    365,306.64x = 70,478,852,759.57
  5. Step 5: Solve for x
    x = 70,478,852,759.57/365,306.64
  6. Step 6: Final answer
    x = 192,930.66

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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.