Home / 513,187,039.07-708,203,376.72-278,238,153.95

Finding the Fourth Proportional to 513,187,039.07, 708,203,376.72 and 278,238,153.95

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Solution

The fourth proportional to 513,187,039.07, 708,203,376.72 and 278,238,153.95 is: 383,971,505.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,187,039.07 : 708,203,376.72 = 278,238,153.95 : x
  2. Step 2: Convert to fraction form
    513,187,039.07/708,203,376.72 = 278,238,153.95/x
  3. Step 3: Cross multiply
    513,187,039.07x = 708,203,376.72 × 278,238,153.95
  4. Step 4: Simplify right side
    513,187,039.07x = 197,049,200,159,729,216
  5. Step 5: Solve for x
    x = 197,049,200,159,729,216/513,187,039.07
  6. Step 6: Final answer
    x = 383,971,505.82

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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.