Home / 384,128,709.12-530,097,644.54-210,288,453.12

Finding the Fourth Proportional to 384,128,709.12, 530,097,644.54 and 210,288,453.12

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Solution

The fourth proportional to 384,128,709.12, 530,097,644.54 and 210,288,453.12 is: 290,198,079.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,128,709.12 : 530,097,644.54 = 210,288,453.12 : x
  2. Step 2: Convert to fraction form
    384,128,709.12/530,097,644.54 = 210,288,453.12/x
  3. Step 3: Cross multiply
    384,128,709.12x = 530,097,644.54 × 210,288,453.12
  4. Step 4: Simplify right side
    384,128,709.12x = 111,473,413,672,872,224
  5. Step 5: Solve for x
    x = 111,473,413,672,872,224/384,128,709.12
  6. Step 6: Final answer
    x = 290,198,079.51

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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.