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Finding the Fourth Proportional to 743,210.82, 1,114,858.62 and 210,690

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Solution

The fourth proportional to 743,210.82, 1,114,858.62 and 210,690 is: 316,047.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,210.82 : 1,114,858.62 = 210,690 : x
  2. Step 2: Convert to fraction form
    743,210.82/1,114,858.62 = 210,690/x
  3. Step 3: Cross multiply
    743,210.82x = 1,114,858.62 × 210,690
  4. Step 4: Simplify right side
    743,210.82x = 234,889,562,647.80
  5. Step 5: Solve for x
    x = 234,889,562,647.80/743,210.82
  6. Step 6: Final answer
    x = 316,047.02

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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.