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Finding the Fourth Proportional to 642,106.80, 963,223.92 and 237,405.02

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Solution

The fourth proportional to 642,106.80, 963,223.92 and 237,405.02 is: 356,131.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,106.80 : 963,223.92 = 237,405.02 : x
  2. Step 2: Convert to fraction form
    642,106.80/963,223.92 = 237,405.02/x
  3. Step 3: Cross multiply
    642,106.80x = 963,223.92 × 237,405.02
  4. Step 4: Simplify right side
    642,106.80x = 228,674,189,175.96
  5. Step 5: Solve for x
    x = 228,674,189,175.96/642,106.80
  6. Step 6: Final answer
    x = 356,131.08

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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.