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Finding the Fourth Proportional to 289,392.80, 433,943.40 and 171,100.40

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Solution

The fourth proportional to 289,392.80, 433,943.40 and 171,100.40 is: 256,564.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,392.80 : 433,943.40 = 171,100.40 : x
  2. Step 2: Convert to fraction form
    289,392.80/433,943.40 = 171,100.40/x
  3. Step 3: Cross multiply
    289,392.80x = 433,943.40 × 171,100.40
  4. Step 4: Simplify right side
    289,392.80x = 74,247,889,317.36
  5. Step 5: Solve for x
    x = 74,247,889,317.36/289,392.80
  6. Step 6: Final answer
    x = 256,564.40

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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.