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Finding the Fourth Proportional to 273,986,871.79, 410,980,299.74 and 126,390,762.77

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Solution

The fourth proportional to 273,986,871.79, 410,980,299.74 and 126,390,762.77 is: 189,586,140.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,986,871.79 : 410,980,299.74 = 126,390,762.77 : x
  2. Step 2: Convert to fraction form
    273,986,871.79/410,980,299.74 = 126,390,762.77/x
  3. Step 3: Cross multiply
    273,986,871.79x = 410,980,299.74 × 126,390,762.77
  4. Step 4: Simplify right side
    273,986,871.79x = 51,944,113,568,925,256
  5. Step 5: Solve for x
    x = 51,944,113,568,925,256/273,986,871.79
  6. Step 6: Final answer
    x = 189,586,140.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.