Home / 281,718,019.40-422,577,029.10-128,663,011.40

Finding the Fourth Proportional to 281,718,019.40, 422,577,029.10 and 128,663,011.40

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Solution

The fourth proportional to 281,718,019.40, 422,577,029.10 and 128,663,011.40 is: 192,994,517.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,718,019.40 : 422,577,029.10 = 128,663,011.40 : x
  2. Step 2: Convert to fraction form
    281,718,019.40/422,577,029.10 = 128,663,011.40/x
  3. Step 3: Cross multiply
    281,718,019.40x = 422,577,029.10 × 128,663,011.40
  4. Step 4: Simplify right side
    281,718,019.40x = 54,370,033,112,471,440
  5. Step 5: Solve for x
    x = 54,370,033,112,471,440/281,718,019.40
  6. Step 6: Final answer
    x = 192,994,517.10

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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.