Home / 311,117.16-429,213.96-230,742.48

Finding the Fourth Proportional to 311,117.16, 429,213.96 and 230,742.48

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Solution

The fourth proportional to 311,117.16, 429,213.96 and 230,742.48 is: 318,329.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,117.16 : 429,213.96 = 230,742.48 : x
  2. Step 2: Convert to fraction form
    311,117.16/429,213.96 = 230,742.48/x
  3. Step 3: Cross multiply
    311,117.16x = 429,213.96 × 230,742.48
  4. Step 4: Simplify right side
    311,117.16x = 99,037,893,581.02
  5. Step 5: Solve for x
    x = 99,037,893,581.02/311,117.16
  6. Step 6: Final answer
    x = 318,329.90

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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.