Home / 389,247,509.36-537,162,986.04-210,631,398.68

Finding the Fourth Proportional to 389,247,509.36, 537,162,986.04 and 210,631,398.68

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Solution

The fourth proportional to 389,247,509.36, 537,162,986.04 and 210,631,398.68 is: 290,672,100.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,247,509.36 : 537,162,986.04 = 210,631,398.68 : x
  2. Step 2: Convert to fraction form
    389,247,509.36/537,162,986.04 = 210,631,398.68/x
  3. Step 3: Cross multiply
    389,247,509.36x = 537,162,986.04 × 210,631,398.68
  4. Step 4: Simplify right side
    389,247,509.36x = 113,143,391,068,730,512
  5. Step 5: Solve for x
    x = 113,143,391,068,730,512/389,247,509.36
  6. Step 6: Final answer
    x = 290,672,100.27

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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.