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Finding the Fourth Proportional to 288,674.68, 398,389.74 and 161,355.64

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Solution

The fourth proportional to 288,674.68, 398,389.74 and 161,355.64 is: 222,681.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,674.68 : 398,389.74 = 161,355.64 : x
  2. Step 2: Convert to fraction form
    288,674.68/398,389.74 = 161,355.64/x
  3. Step 3: Cross multiply
    288,674.68x = 398,389.74 × 161,355.64
  4. Step 4: Simplify right side
    288,674.68x = 64,282,431,467.13
  5. Step 5: Solve for x
    x = 64,282,431,467.13/288,674.68
  6. Step 6: Final answer
    x = 222,681.23

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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.