Home / 283,030.12-390,578.50-155,705.80

Finding the Fourth Proportional to 283,030.12, 390,578.50 and 155,705.80

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Solution

The fourth proportional to 283,030.12, 390,578.50 and 155,705.80 is: 214,872.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,030.12 : 390,578.50 = 155,705.80 : x
  2. Step 2: Convert to fraction form
    283,030.12/390,578.50 = 155,705.80/x
  3. Step 3: Cross multiply
    283,030.12x = 390,578.50 × 155,705.80
  4. Step 4: Simplify right side
    283,030.12x = 60,815,337,805.30
  5. Step 5: Solve for x
    x = 60,815,337,805.30/283,030.12
  6. Step 6: Final answer
    x = 214,872.32

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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.