Home / 305,461,920.30-421,551,331.20-180,019,410.54

Finding the Fourth Proportional to 305,461,920.30, 421,551,331.20 and 180,019,410.54

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Solution

The fourth proportional to 305,461,920.30, 421,551,331.20 and 180,019,410.54 is: 248,434,967.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,461,920.30 : 421,551,331.20 = 180,019,410.54 : x
  2. Step 2: Convert to fraction form
    305,461,920.30/421,551,331.20 = 180,019,410.54/x
  3. Step 3: Cross multiply
    305,461,920.30x = 421,551,331.20 × 180,019,410.54
  4. Step 4: Simplify right side
    305,461,920.30x = 75,887,422,154,976,304
  5. Step 5: Solve for x
    x = 75,887,422,154,976,304/305,461,920.30
  6. Step 6: Final answer
    x = 248,434,967.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.