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Finding the Fourth Proportional to 209,578.92, 314,407.26 and 69,338.76

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Solution

The fourth proportional to 209,578.92, 314,407.26 and 69,338.76 is: 104,021.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,578.92 : 314,407.26 = 69,338.76 : x
  2. Step 2: Convert to fraction form
    209,578.92/314,407.26 = 69,338.76/x
  3. Step 3: Cross multiply
    209,578.92x = 314,407.26 × 69,338.76
  4. Step 4: Simplify right side
    209,578.92x = 21,800,609,543.40
  5. Step 5: Solve for x
    x = 21,800,609,543.40/209,578.92
  6. Step 6: Final answer
    x = 104,021.00

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1.5x scale

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.