Home / 283,045.40-390,588.54-155,717.72

Finding the Fourth Proportional to 283,045.40, 390,588.54 and 155,717.72

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Solution

The fourth proportional to 283,045.40, 390,588.54 and 155,717.72 is: 214,882.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,045.40 : 390,588.54 = 155,717.72 : x
  2. Step 2: Convert to fraction form
    283,045.40/390,588.54 = 155,717.72/x
  3. Step 3: Cross multiply
    283,045.40x = 390,588.54 × 155,717.72
  4. Step 4: Simplify right side
    283,045.40x = 60,821,556,906.93
  5. Step 5: Solve for x
    x = 60,821,556,906.93/283,045.40
  6. Step 6: Final answer
    x = 214,882.69

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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.