Home / 397,826,986.46-549,018,172.41-221,614,768.58

Finding the Fourth Proportional to 397,826,986.46, 549,018,172.41 and 221,614,768.58

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Solution

The fourth proportional to 397,826,986.46, 549,018,172.41 and 221,614,768.58 is: 305,837,812.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,826,986.46 : 549,018,172.41 = 221,614,768.58 : x
  2. Step 2: Convert to fraction form
    397,826,986.46/549,018,172.41 = 221,614,768.58/x
  3. Step 3: Cross multiply
    397,826,986.46x = 549,018,172.41 × 221,614,768.58
  4. Step 4: Simplify right side
    397,826,986.46x = 121,670,535,224,856,688
  5. Step 5: Solve for x
    x = 121,670,535,224,856,688/397,826,986.46
  6. Step 6: Final answer
    x = 305,837,812.33

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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.