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Finding the Fourth Proportional to 420,450.55, 630,300.84 and 154,149.01

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Solution

The fourth proportional to 420,450.55, 630,300.84 and 154,149.01 is: 231,086.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,450.55 : 630,300.84 = 154,149.01 : x
  2. Step 2: Convert to fraction form
    420,450.55/630,300.84 = 154,149.01/x
  3. Step 3: Cross multiply
    420,450.55x = 630,300.84 × 154,149.01
  4. Step 4: Simplify right side
    420,450.55x = 97,160,250,488.17
  5. Step 5: Solve for x
    x = 97,160,250,488.17/420,450.55
  6. Step 6: Final answer
    x = 231,086.03

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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.