Home / 209,421,812.37-289,033,520.64-159,103,228.89

Finding the Fourth Proportional to 209,421,812.37, 289,033,520.64 and 159,103,228.89

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Solution

The fourth proportional to 209,421,812.37, 289,033,520.64 and 159,103,228.89 is: 219,586,326.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,421,812.37 : 289,033,520.64 = 159,103,228.89 : x
  2. Step 2: Convert to fraction form
    209,421,812.37/289,033,520.64 = 159,103,228.89/x
  3. Step 3: Cross multiply
    209,421,812.37x = 289,033,520.64 × 159,103,228.89
  4. Step 4: Simplify right side
    209,421,812.37x = 45,986,166,391,268,456
  5. Step 5: Solve for x
    x = 45,986,166,391,268,456/209,421,812.37
  6. Step 6: Final answer
    x = 219,586,326.14

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1.5x scale

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.