Home / 283,145.48-390,739.92-155,820.98

Finding the Fourth Proportional to 283,145.48, 390,739.92 and 155,820.98

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Solution

The fourth proportional to 283,145.48, 390,739.92 and 155,820.98 is: 215,032.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,145.48 : 390,739.92 = 155,820.98 : x
  2. Step 2: Convert to fraction form
    283,145.48/390,739.92 = 155,820.98/x
  3. Step 3: Cross multiply
    283,145.48x = 390,739.92 × 155,820.98
  4. Step 4: Simplify right side
    283,145.48x = 60,885,477,259.52
  5. Step 5: Solve for x
    x = 60,885,477,259.52/283,145.48
  6. Step 6: Final answer
    x = 215,032.49

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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.