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Finding the Fourth Proportional to 443,466.90, 665,135.55 and 127,890.90

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Solution

The fourth proportional to 443,466.90, 665,135.55 and 127,890.90 is: 191,817.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,466.90 : 665,135.55 = 127,890.90 : x
  2. Step 2: Convert to fraction form
    443,466.90/665,135.55 = 127,890.90/x
  3. Step 3: Cross multiply
    443,466.90x = 665,135.55 × 127,890.90
  4. Step 4: Simplify right side
    443,466.90x = 85,064,784,111.50
  5. Step 5: Solve for x
    x = 85,064,784,111.50/443,466.90
  6. Step 6: Final answer
    x = 191,817.66

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1.5x scale

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.