Home / 283,211.17-390,828.45-155,884.03

Finding the Fourth Proportional to 283,211.17, 390,828.45 and 155,884.03

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Solution

The fourth proportional to 283,211.17, 390,828.45 and 155,884.03 is: 215,118.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,211.17 : 390,828.45 = 155,884.03 : x
  2. Step 2: Convert to fraction form
    283,211.17/390,828.45 = 155,884.03/x
  3. Step 3: Cross multiply
    283,211.17x = 390,828.45 × 155,884.03
  4. Step 4: Simplify right side
    283,211.17x = 60,923,913,824.65
  5. Step 5: Solve for x
    x = 60,923,913,824.65/283,211.17
  6. Step 6: Final answer
    x = 215,118.33

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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.