Home / 280,911,338.76-421,279,554.06-99,115,923.72

Finding the Fourth Proportional to 280,911,338.76, 421,279,554.06 and 99,115,923.72

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Solution

The fourth proportional to 280,911,338.76, 421,279,554.06 and 99,115,923.72 is: 148,643,028.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,911,338.76 : 421,279,554.06 = 99,115,923.72 : x
  2. Step 2: Convert to fraction form
    280,911,338.76/421,279,554.06 = 99,115,923.72/x
  3. Step 3: Cross multiply
    280,911,338.76x = 421,279,554.06 × 99,115,923.72
  4. Step 4: Simplify right side
    280,911,338.76x = 41,755,512,145,006,576
  5. Step 5: Solve for x
    x = 41,755,512,145,006,576/280,911,338.76
  6. Step 6: Final answer
    x = 148,643,028.54

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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.