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Finding the Fourth Proportional to 427,017.61, 589,342.89 and 245,725.84

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Solution

The fourth proportional to 427,017.61, 589,342.89 and 245,725.84 is: 339,135.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,017.61 : 589,342.89 = 245,725.84 : x
  2. Step 2: Convert to fraction form
    427,017.61/589,342.89 = 245,725.84/x
  3. Step 3: Cross multiply
    427,017.61x = 589,342.89 × 245,725.84
  4. Step 4: Simplify right side
    427,017.61x = 144,816,776,141.39
  5. Step 5: Solve for x
    x = 144,816,776,141.39/427,017.61
  6. Step 6: Final answer
    x = 339,135.37

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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.