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Finding the Fourth Proportional to 365,379.66, 548,069.49 and 128,666.88

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Solution

The fourth proportional to 365,379.66, 548,069.49 and 128,666.88 is: 193,000.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,379.66 : 548,069.49 = 128,666.88 : x
  2. Step 2: Convert to fraction form
    365,379.66/548,069.49 = 128,666.88/x
  3. Step 3: Cross multiply
    365,379.66x = 548,069.49 × 128,666.88
  4. Step 4: Simplify right side
    365,379.66x = 70,518,391,301.49
  5. Step 5: Solve for x
    x = 70,518,391,301.49/365,379.66
  6. Step 6: Final answer
    x = 193,000.32

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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.