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Finding the Fourth Proportional to 420,372.87, 630,541.67 and 195,656.01

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Solution

The fourth proportional to 420,372.87, 630,541.67 and 195,656.01 is: 293,475.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,372.87 : 630,541.67 = 195,656.01 : x
  2. Step 2: Convert to fraction form
    420,372.87/630,541.67 = 195,656.01/x
  3. Step 3: Cross multiply
    420,372.87x = 630,541.67 × 195,656.01
  4. Step 4: Simplify right side
    420,372.87x = 123,369,266,312.66
  5. Step 5: Solve for x
    x = 123,369,266,312.66/420,372.87
  6. Step 6: Final answer
    x = 293,475.80

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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.