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Finding the Fourth Proportional to 228,782.87, 315,739.26 and 126,840.30

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Solution

The fourth proportional to 228,782.87, 315,739.26 and 126,840.30 is: 175,050.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,782.87 : 315,739.26 = 126,840.30 : x
  2. Step 2: Convert to fraction form
    228,782.87/315,739.26 = 126,840.30/x
  3. Step 3: Cross multiply
    228,782.87x = 315,739.26 × 126,840.30
  4. Step 4: Simplify right side
    228,782.87x = 40,048,462,460.18
  5. Step 5: Solve for x
    x = 40,048,462,460.18/228,782.87
  6. Step 6: Final answer
    x = 175,050.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.