Home / 303,621.40-455,432.10-213,079.60

Finding the Fourth Proportional to 303,621.40, 455,432.10 and 213,079.60

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Solution

The fourth proportional to 303,621.40, 455,432.10 and 213,079.60 is: 319,619.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,621.40 : 455,432.10 = 213,079.60 : x
  2. Step 2: Convert to fraction form
    303,621.40/455,432.10 = 213,079.60/x
  3. Step 3: Cross multiply
    303,621.40x = 455,432.10 × 213,079.60
  4. Step 4: Simplify right side
    303,621.40x = 97,043,289,695.16
  5. Step 5: Solve for x
    x = 97,043,289,695.16/303,621.40
  6. Step 6: Final answer
    x = 319,619.40

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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.