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Finding the Fourth Proportional to 228,334.65, 315,228.50 and 137,713.47

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Solution

The fourth proportional to 228,334.65, 315,228.50 and 137,713.47 is: 190,120.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,334.65 : 315,228.50 = 137,713.47 : x
  2. Step 2: Convert to fraction form
    228,334.65/315,228.50 = 137,713.47/x
  3. Step 3: Cross multiply
    228,334.65x = 315,228.50 × 137,713.47
  4. Step 4: Simplify right side
    228,334.65x = 43,411,209,889.33
  5. Step 5: Solve for x
    x = 43,411,209,889.33/228,334.65
  6. Step 6: Final answer
    x = 190,120.99

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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.