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Finding the Fourth Proportional to 365,497.80, 548,246.70 and 128,864.40

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Solution

The fourth proportional to 365,497.80, 548,246.70 and 128,864.40 is: 193,296.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,497.80 : 548,246.70 = 128,864.40 : x
  2. Step 2: Convert to fraction form
    365,497.80/548,246.70 = 128,864.40/x
  3. Step 3: Cross multiply
    365,497.80x = 548,246.70 × 128,864.40
  4. Step 4: Simplify right side
    365,497.80x = 70,649,482,047.48
  5. Step 5: Solve for x
    x = 70,649,482,047.48/365,497.80
  6. Step 6: Final answer
    x = 193,296.60

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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.