Home / 311,839.68-430,535.52-216,312.96

Finding the Fourth Proportional to 311,839.68, 430,535.52 and 216,312.96

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Solution

The fourth proportional to 311,839.68, 430,535.52 and 216,312.96 is: 298,648.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,839.68 : 430,535.52 = 216,312.96 : x
  2. Step 2: Convert to fraction form
    311,839.68/430,535.52 = 216,312.96/x
  3. Step 3: Cross multiply
    311,839.68x = 430,535.52 × 216,312.96
  4. Step 4: Simplify right side
    311,839.68x = 93,130,412,716.34
  5. Step 5: Solve for x
    x = 93,130,412,716.34/311,839.68
  6. Step 6: Final answer
    x = 298,648.37

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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.