Home / 210,621.02-315,947.85-70,380.14

Finding the Fourth Proportional to 210,621.02, 315,947.85 and 70,380.14

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Solution

The fourth proportional to 210,621.02, 315,947.85 and 70,380.14 is: 105,575.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,621.02 : 315,947.85 = 70,380.14 : x
  2. Step 2: Convert to fraction form
    210,621.02/315,947.85 = 70,380.14/x
  3. Step 3: Cross multiply
    210,621.02x = 315,947.85 × 70,380.14
  4. Step 4: Simplify right side
    210,621.02x = 22,236,453,915.70
  5. Step 5: Solve for x
    x = 22,236,453,915.70/210,621.02
  6. Step 6: Final answer
    x = 105,575.66

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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.