Home / 283,144.77-390,739.55-155,820.37

Finding the Fourth Proportional to 283,144.77, 390,739.55 and 155,820.37

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Solution

The fourth proportional to 283,144.77, 390,739.55 and 155,820.37 is: 215,031.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,144.77 : 390,739.55 = 155,820.37 : x
  2. Step 2: Convert to fraction form
    283,144.77/390,739.55 = 155,820.37/x
  3. Step 3: Cross multiply
    283,144.77x = 390,739.55 × 155,820.37
  4. Step 4: Simplify right side
    283,144.77x = 60,885,181,254.63
  5. Step 5: Solve for x
    x = 60,885,181,254.63/283,144.77
  6. Step 6: Final answer
    x = 215,031.98

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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.