Home / 283,128.20-390,706.98-155,800.52

Finding the Fourth Proportional to 283,128.20, 390,706.98 and 155,800.52

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Solution

The fourth proportional to 283,128.20, 390,706.98 and 155,800.52 is: 214,999.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,128.20 : 390,706.98 = 155,800.52 : x
  2. Step 2: Convert to fraction form
    283,128.20/390,706.98 = 155,800.52/x
  3. Step 3: Cross multiply
    283,128.20x = 390,706.98 × 155,800.52
  4. Step 4: Simplify right side
    283,128.20x = 60,872,350,651.63
  5. Step 5: Solve for x
    x = 60,872,350,651.63/283,128.20
  6. Step 6: Final answer
    x = 214,999.25

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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.