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Finding the Fourth Proportional to 210,161.70, 315,219.24 and 75,220.35

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Solution

The fourth proportional to 210,161.70, 315,219.24 and 75,220.35 is: 112,822.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,161.70 : 315,219.24 = 75,220.35 : x
  2. Step 2: Convert to fraction form
    210,161.70/315,219.24 = 75,220.35/x
  3. Step 3: Cross multiply
    210,161.70x = 315,219.24 × 75,220.35
  4. Step 4: Simplify right side
    210,161.70x = 23,710,901,559.53
  5. Step 5: Solve for x
    x = 23,710,901,559.53/210,161.70
  6. Step 6: Final answer
    x = 112,822.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.