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Finding the Fourth Proportional to 228,813.42, 315,762.93 and 126,840.45

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Solution

The fourth proportional to 228,813.42, 315,762.93 and 126,840.45 is: 175,040.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,813.42 : 315,762.93 = 126,840.45 : x
  2. Step 2: Convert to fraction form
    228,813.42/315,762.93 = 126,840.45/x
  3. Step 3: Cross multiply
    228,813.42x = 315,762.93 × 126,840.45
  4. Step 4: Simplify right side
    228,813.42x = 40,051,512,134.52
  5. Step 5: Solve for x
    x = 40,051,512,134.52/228,813.42
  6. Step 6: Final answer
    x = 175,040.05

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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.