Home / 389,688,040.62-537,765,210.30-211,067,485.12

Finding the Fourth Proportional to 389,688,040.62, 537,765,210.30 and 211,067,485.12

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Solution

The fourth proportional to 389,688,040.62, 537,765,210.30 and 211,067,485.12 is: 291,270,808.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,688,040.62 : 537,765,210.30 = 211,067,485.12 : x
  2. Step 2: Convert to fraction form
    389,688,040.62/537,765,210.30 = 211,067,485.12/x
  3. Step 3: Cross multiply
    389,688,040.62x = 537,765,210.30 × 211,067,485.12
  4. Step 4: Simplify right side
    389,688,040.62x = 113,504,750,523,048,912
  5. Step 5: Solve for x
    x = 113,504,750,523,048,912/389,688,040.62
  6. Step 6: Final answer
    x = 291,270,808.16

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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.