Home / 285,890.79-428,294.90-190,834.35

Finding the Fourth Proportional to 285,890.79, 428,294.90 and 190,834.35

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Solution

The fourth proportional to 285,890.79, 428,294.90 and 190,834.35 is: 285,890.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,890.79 : 428,294.90 = 190,834.35 : x
  2. Step 2: Convert to fraction form
    285,890.79/428,294.90 = 190,834.35/x
  3. Step 3: Cross multiply
    285,890.79x = 428,294.90 × 190,834.35
  4. Step 4: Simplify right side
    285,890.79x = 81,733,377,895.64
  5. Step 5: Solve for x
    x = 81,733,377,895.64/285,890.79
  6. Step 6: Final answer
    x = 285,890.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.