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Finding the Fourth Proportional to 356,871.56, 535,137.84 and 207,157.77

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Solution

The fourth proportional to 356,871.56, 535,137.84 and 207,157.77 is: 310,638.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,871.56 : 535,137.84 = 207,157.77 : x
  2. Step 2: Convert to fraction form
    356,871.56/535,137.84 = 207,157.77/x
  3. Step 3: Cross multiply
    356,871.56x = 535,137.84 × 207,157.77
  4. Step 4: Simplify right side
    356,871.56x = 110,857,961,577.02
  5. Step 5: Solve for x
    x = 110,857,961,577.02/356,871.56
  6. Step 6: Final answer
    x = 310,638.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.