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Finding the Fourth Proportional to 228,838.74, 315,816.11 and 126,896.17

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Solution

The fourth proportional to 228,838.74, 315,816.11 and 126,896.17 is: 175,127.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,838.74 : 315,816.11 = 126,896.17 : x
  2. Step 2: Convert to fraction form
    228,838.74/315,816.11 = 126,896.17/x
  3. Step 3: Cross multiply
    228,838.74x = 315,816.11 × 126,896.17
  4. Step 4: Simplify right side
    228,838.74x = 40,075,855,141.08
  5. Step 5: Solve for x
    x = 40,075,855,141.08/228,838.74
  6. Step 6: Final answer
    x = 175,127.05

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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.