Home / 280,032,407.80-420,048,611.70-252,291,187.60

Finding the Fourth Proportional to 280,032,407.80, 420,048,611.70 and 252,291,187.60

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Solution

The fourth proportional to 280,032,407.80, 420,048,611.70 and 252,291,187.60 is: 378,436,781.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,032,407.80 : 420,048,611.70 = 252,291,187.60 : x
  2. Step 2: Convert to fraction form
    280,032,407.80/420,048,611.70 = 252,291,187.60/x
  3. Step 3: Cross multiply
    280,032,407.80x = 420,048,611.70 × 252,291,187.60
  4. Step 4: Simplify right side
    280,032,407.80x = 105,974,563,095,524,256
  5. Step 5: Solve for x
    x = 105,974,563,095,524,256/280,032,407.80
  6. Step 6: Final answer
    x = 378,436,781.40

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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.