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Finding the Fourth Proportional to 443,347.19, 665,114.30 and 143,804.51

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Solution

The fourth proportional to 443,347.19, 665,114.30 and 143,804.51 is: 215,737.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,347.19 : 665,114.30 = 143,804.51 : x
  2. Step 2: Convert to fraction form
    443,347.19/665,114.30 = 143,804.51/x
  3. Step 3: Cross multiply
    443,347.19x = 665,114.30 × 143,804.51
  4. Step 4: Simplify right side
    443,347.19x = 95,646,436,005.49
  5. Step 5: Solve for x
    x = 95,646,436,005.49/443,347.19
  6. Step 6: Final answer
    x = 215,737.10

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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.