Home / 283,063.76-390,634.04-155,739.72

Finding the Fourth Proportional to 283,063.76, 390,634.04 and 155,739.72

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Solution

The fourth proportional to 283,063.76, 390,634.04 and 155,739.72 is: 214,924.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,063.76 : 390,634.04 = 155,739.72 : x
  2. Step 2: Convert to fraction form
    283,063.76/390,634.04 = 155,739.72/x
  3. Step 3: Cross multiply
    283,063.76x = 390,634.04 × 155,739.72
  4. Step 4: Simplify right side
    283,063.76x = 60,837,236,012.07
  5. Step 5: Solve for x
    x = 60,837,236,012.07/283,063.76
  6. Step 6: Final answer
    x = 214,924.14

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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.