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Finding the Fourth Proportional to 17,068,819.20, 25,603,228.80 and 15,771,206.40

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Solution

The fourth proportional to 17,068,819.20, 25,603,228.80 and 15,771,206.40 is: 23,656,809.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,068,819.20 : 25,603,228.80 = 15,771,206.40 : x
  2. Step 2: Convert to fraction form
    17,068,819.20/25,603,228.80 = 15,771,206.40/x
  3. Step 3: Cross multiply
    17,068,819.20x = 25,603,228.80 × 15,771,206.40
  4. Step 4: Simplify right side
    17,068,819.20x = 403,793,805,911,224.31
  5. Step 5: Solve for x
    x = 403,793,805,911,224.31/17,068,819.20
  6. Step 6: Final answer
    x = 23,656,809.60

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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.