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Finding the Fourth Proportional to 420,370.37, 630,537.91 and 195,653.51

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Solution

The fourth proportional to 420,370.37, 630,537.91 and 195,653.51 is: 293,472.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,370.37 : 630,537.91 = 195,653.51 : x
  2. Step 2: Convert to fraction form
    420,370.37/630,537.91 = 195,653.51/x
  3. Step 3: Cross multiply
    420,370.37x = 630,537.91 × 195,653.51
  4. Step 4: Simplify right side
    420,370.37x = 123,366,955,279.56
  5. Step 5: Solve for x
    x = 123,366,955,279.56/420,370.37
  6. Step 6: Final answer
    x = 293,472.05

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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.