Home / 311,921.01-429,943.28-243,817.83

Finding the Fourth Proportional to 311,921.01, 429,943.28 and 243,817.83

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Solution

The fourth proportional to 311,921.01, 429,943.28 and 243,817.83 is: 336,071.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,921.01 : 429,943.28 = 243,817.83 : x
  2. Step 2: Convert to fraction form
    311,921.01/429,943.28 = 243,817.83/x
  3. Step 3: Cross multiply
    311,921.01x = 429,943.28 × 243,817.83
  4. Step 4: Simplify right side
    311,921.01x = 104,827,836,333.59
  5. Step 5: Solve for x
    x = 104,827,836,333.59/311,921.01
  6. Step 6: Final answer
    x = 336,071.74

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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.