Home / 389,247,342.80-537,162,756.12-210,631,232.03

Finding the Fourth Proportional to 389,247,342.80, 537,162,756.12 and 210,631,232.03

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Solution

The fourth proportional to 389,247,342.80, 537,162,756.12 and 210,631,232.03 is: 290,671,870.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,247,342.80 : 537,162,756.12 = 210,631,232.03 : x
  2. Step 2: Convert to fraction form
    389,247,342.80/537,162,756.12 = 210,631,232.03/x
  3. Step 3: Cross multiply
    389,247,342.80x = 537,162,756.12 × 210,631,232.03
  4. Step 4: Simplify right side
    389,247,342.80x = 113,143,253,119,500,208
  5. Step 5: Solve for x
    x = 113,143,253,119,500,208/389,247,342.80
  6. Step 6: Final answer
    x = 290,671,870.25

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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.