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Finding the Fourth Proportional to 643,166.55, 887,526.59 and 356,676.03

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Solution

The fourth proportional to 643,166.55, 887,526.59 and 356,676.03 is: 492,188.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,166.55 : 887,526.59 = 356,676.03 : x
  2. Step 2: Convert to fraction form
    643,166.55/887,526.59 = 356,676.03/x
  3. Step 3: Cross multiply
    643,166.55x = 887,526.59 × 356,676.03
  4. Step 4: Simplify right side
    643,166.55x = 316,559,458,857.26
  5. Step 5: Solve for x
    x = 316,559,458,857.26/643,166.55
  6. Step 6: Final answer
    x = 492,188.93

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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.