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Finding the Fourth Proportional to 402,564.36, 555,563.70 and 335,379.72

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Solution

The fourth proportional to 402,564.36, 555,563.70 and 335,379.72 is: 462,844.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,564.36 : 555,563.70 = 335,379.72 : x
  2. Step 2: Convert to fraction form
    402,564.36/555,563.70 = 335,379.72/x
  3. Step 3: Cross multiply
    402,564.36x = 555,563.70 × 335,379.72
  4. Step 4: Simplify right side
    402,564.36x = 186,324,798,148.16
  5. Step 5: Solve for x
    x = 186,324,798,148.16/402,564.36
  6. Step 6: Final answer
    x = 462,844.74

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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.