Home / 384,128,711.12-530,097,647.30-210,288,455.12

Finding the Fourth Proportional to 384,128,711.12, 530,097,647.30 and 210,288,455.12

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Solution

The fourth proportional to 384,128,711.12, 530,097,647.30 and 210,288,455.12 is: 290,198,082.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,128,711.12 : 530,097,647.30 = 210,288,455.12 : x
  2. Step 2: Convert to fraction form
    384,128,711.12/530,097,647.30 = 210,288,455.12/x
  3. Step 3: Cross multiply
    384,128,711.12x = 530,097,647.30 × 210,288,455.12
  4. Step 4: Simplify right side
    384,128,711.12x = 111,473,415,313,463,648
  5. Step 5: Solve for x
    x = 111,473,415,313,463,648/384,128,711.12
  6. Step 6: Final answer
    x = 290,198,082.27

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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.