Home / 283,016.90-390,549.20-155,689.22

Finding the Fourth Proportional to 283,016.90, 390,549.20 and 155,689.22

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Solution

The fourth proportional to 283,016.90, 390,549.20 and 155,689.22 is: 214,843.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,016.90 : 390,549.20 = 155,689.22 : x
  2. Step 2: Convert to fraction form
    283,016.90/390,549.20 = 155,689.22/x
  3. Step 3: Cross multiply
    283,016.90x = 390,549.20 × 155,689.22
  4. Step 4: Simplify right side
    283,016.90x = 60,804,300,319.62
  5. Step 5: Solve for x
    x = 60,804,300,319.62/283,016.90
  6. Step 6: Final answer
    x = 214,843.36

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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.