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Finding the Fourth Proportional to 365,561.47, 548,385.94 and 128,855.17

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Solution

The fourth proportional to 365,561.47, 548,385.94 and 128,855.17 is: 193,298.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,561.47 : 548,385.94 = 128,855.17 : x
  2. Step 2: Convert to fraction form
    365,561.47/548,385.94 = 128,855.17/x
  3. Step 3: Cross multiply
    365,561.47x = 548,385.94 × 128,855.17
  4. Step 4: Simplify right side
    365,561.47x = 70,662,360,782.38
  5. Step 5: Solve for x
    x = 70,662,360,782.38/365,561.47
  6. Step 6: Final answer
    x = 193,298.17

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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.