Home / 280,908,068.80-421,362,103.20-73,646,078.80

Finding the Fourth Proportional to 280,908,068.80, 421,362,103.20 and 73,646,078.80

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Solution

The fourth proportional to 280,908,068.80, 421,362,103.20 and 73,646,078.80 is: 110,469,118.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,908,068.80 : 421,362,103.20 = 73,646,078.80 : x
  2. Step 2: Convert to fraction form
    280,908,068.80/421,362,103.20 = 73,646,078.80/x
  3. Step 3: Cross multiply
    280,908,068.80x = 421,362,103.20 × 73,646,078.80
  4. Step 4: Simplify right side
    280,908,068.80x = 31,031,666,655,600,932
  5. Step 5: Solve for x
    x = 31,031,666,655,600,932/280,908,068.80
  6. Step 6: Final answer
    x = 110,469,118.20

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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.