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Finding the Fourth Proportional to 417,872.79, 576,676.26 and 245,803.28

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Solution

The fourth proportional to 417,872.79, 576,676.26 and 245,803.28 is: 339,215.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,872.79 : 576,676.26 = 245,803.28 : x
  2. Step 2: Convert to fraction form
    417,872.79/576,676.26 = 245,803.28/x
  3. Step 3: Cross multiply
    417,872.79x = 576,676.26 × 245,803.28
  4. Step 4: Simplify right side
    417,872.79x = 141,748,913,322.75
  5. Step 5: Solve for x
    x = 141,748,913,322.75/417,872.79
  6. Step 6: Final answer
    x = 339,215.47

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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.