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Finding the Fourth Proportional to 442,415.61, 610,515.96 and 261,185.92

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Solution

The fourth proportional to 442,415.61, 610,515.96 and 261,185.92 is: 360,426.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,415.61 : 610,515.96 = 261,185.92 : x
  2. Step 2: Convert to fraction form
    442,415.61/610,515.96 = 261,185.92/x
  3. Step 3: Cross multiply
    442,415.61x = 610,515.96 × 261,185.92
  4. Step 4: Simplify right side
    442,415.61x = 159,458,168,328.77
  5. Step 5: Solve for x
    x = 159,458,168,328.77/442,415.61
  6. Step 6: Final answer
    x = 360,426.18

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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.