Home / 810,020.80-1,215,031.20-210,977.20

Finding the Fourth Proportional to 810,020.80, 1,215,031.20 and 210,977.20

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Solution

The fourth proportional to 810,020.80, 1,215,031.20 and 210,977.20 is: 316,465.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,020.80 : 1,215,031.20 = 210,977.20 : x
  2. Step 2: Convert to fraction form
    810,020.80/1,215,031.20 = 210,977.20/x
  3. Step 3: Cross multiply
    810,020.80x = 1,215,031.20 × 210,977.20
  4. Step 4: Simplify right side
    810,020.80x = 256,343,880,488.64
  5. Step 5: Solve for x
    x = 256,343,880,488.64/810,020.80
  6. Step 6: Final answer
    x = 316,465.80

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Similar ratio
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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.