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Finding the Fourth Proportional to 365,074.80, 547,693.80 and 128,425.20

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Solution

The fourth proportional to 365,074.80, 547,693.80 and 128,425.20 is: 192,666.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,074.80 : 547,693.80 = 128,425.20 : x
  2. Step 2: Convert to fraction form
    365,074.80/547,693.80 = 128,425.20/x
  3. Step 3: Cross multiply
    365,074.80x = 547,693.80 × 128,425.20
  4. Step 4: Simplify right side
    365,074.80x = 70,337,685,803.76
  5. Step 5: Solve for x
    x = 70,337,685,803.76/365,074.80
  6. Step 6: Final answer
    x = 192,666.51

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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.