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Finding the Fourth Proportional to 392,029.10, 548,140.90 and 392,029.10

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Solution

The fourth proportional to 392,029.10, 548,140.90 and 392,029.10 is: 548,140.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,029.10 : 548,140.90 = 392,029.10 : x
  2. Step 2: Convert to fraction form
    392,029.10/548,140.90 = 392,029.10/x
  3. Step 3: Cross multiply
    392,029.10x = 548,140.90 × 392,029.10
  4. Step 4: Simplify right side
    392,029.10x = 214,887,183,700.19
  5. Step 5: Solve for x
    x = 214,887,183,700.19/392,029.10
  6. Step 6: Final answer
    x = 548,140.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.