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Finding the Fourth Proportional to 442,478.16, 610,620.12 and 251,491.50

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Solution

The fourth proportional to 442,478.16, 610,620.12 and 251,491.50 is: 347,058.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,478.16 : 610,620.12 = 251,491.50 : x
  2. Step 2: Convert to fraction form
    442,478.16/610,620.12 = 251,491.50/x
  3. Step 3: Cross multiply
    442,478.16x = 610,620.12 × 251,491.50
  4. Step 4: Simplify right side
    442,478.16x = 153,565,769,908.98
  5. Step 5: Solve for x
    x = 153,565,769,908.98/442,478.16
  6. Step 6: Final answer
    x = 347,058.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.