Home / 281,718,023.40-422,577,035.10-128,663,015.40

Finding the Fourth Proportional to 281,718,023.40, 422,577,035.10 and 128,663,015.40

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Solution

The fourth proportional to 281,718,023.40, 422,577,035.10 and 128,663,015.40 is: 192,994,523.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,718,023.40 : 422,577,035.10 = 128,663,015.40 : x
  2. Step 2: Convert to fraction form
    281,718,023.40/422,577,035.10 = 128,663,015.40/x
  3. Step 3: Cross multiply
    281,718,023.40x = 422,577,035.10 × 128,663,015.40
  4. Step 4: Simplify right side
    281,718,023.40x = 54,370,035,574,757,648
  5. Step 5: Solve for x
    x = 54,370,035,574,757,648/281,718,023.40
  6. Step 6: Final answer
    x = 192,994,523.10

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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.