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Finding the Fourth Proportional to 269,547,401.20, 404,321,101.80 and 258,965,820.40

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Solution

The fourth proportional to 269,547,401.20, 404,321,101.80 and 258,965,820.40 is: 388,448,730.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,547,401.20 : 404,321,101.80 = 258,965,820.40 : x
  2. Step 2: Convert to fraction form
    269,547,401.20/404,321,101.80 = 258,965,820.40/x
  3. Step 3: Cross multiply
    269,547,401.20x = 404,321,101.80 × 258,965,820.40
  4. Step 4: Simplify right side
    269,547,401.20x = 104,705,345,832,668,928
  5. Step 5: Solve for x
    x = 104,705,345,832,668,928/269,547,401.20
  6. Step 6: Final answer
    x = 388,448,730.60

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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.