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Finding the Fourth Proportional to 209,910.80, 294,497.20 and 209,910.80

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Solution

The fourth proportional to 209,910.80, 294,497.20 and 209,910.80 is: 294,497.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,910.80 : 294,497.20 = 209,910.80 : x
  2. Step 2: Convert to fraction form
    209,910.80/294,497.20 = 209,910.80/x
  3. Step 3: Cross multiply
    209,910.80x = 294,497.20 × 209,910.80
  4. Step 4: Simplify right side
    209,910.80x = 61,818,142,849.76
  5. Step 5: Solve for x
    x = 61,818,142,849.76/209,910.80
  6. Step 6: Final answer
    x = 294,497.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.