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Finding the Fourth Proportional to 423,639, 635,764.32 and 245,908.80

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Solution

The fourth proportional to 423,639, 635,764.32 and 245,908.80 is: 369,040.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,639 : 635,764.32 = 245,908.80 : x
  2. Step 2: Convert to fraction form
    423,639/635,764.32 = 245,908.80/x
  3. Step 3: Cross multiply
    423,639x = 635,764.32 × 245,908.80
  4. Step 4: Simplify right side
    423,639x = 156,340,041,014.02
  5. Step 5: Solve for x
    x = 156,340,041,014.02/423,639
  6. Step 6: Final answer
    x = 369,040.72

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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.