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Finding the Fourth Proportional to 418,769.51, 578,004.60 and 237,587.49

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Solution

The fourth proportional to 418,769.51, 578,004.60 and 237,587.49 is: 327,928.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,769.51 : 578,004.60 = 237,587.49 : x
  2. Step 2: Convert to fraction form
    418,769.51/578,004.60 = 237,587.49/x
  3. Step 3: Cross multiply
    418,769.51x = 578,004.60 × 237,587.49
  4. Step 4: Simplify right side
    418,769.51x = 137,326,662,122.45
  5. Step 5: Solve for x
    x = 137,326,662,122.45/418,769.51
  6. Step 6: Final answer
    x = 327,928.99

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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.