Home / 261,749,761.20-392,624,641.80-221,438,977.20

Finding the Fourth Proportional to 261,749,761.20, 392,624,641.80 and 221,438,977.20

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Solution

The fourth proportional to 261,749,761.20, 392,624,641.80 and 221,438,977.20 is: 332,158,465.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,749,761.20 : 392,624,641.80 = 221,438,977.20 : x
  2. Step 2: Convert to fraction form
    261,749,761.20/392,624,641.80 = 221,438,977.20/x
  3. Step 3: Cross multiply
    261,749,761.20x = 392,624,641.80 × 221,438,977.20
  4. Step 4: Simplify right side
    261,749,761.20x = 86,942,399,103,708,368
  5. Step 5: Solve for x
    x = 86,942,399,103,708,368/261,749,761.20
  6. Step 6: Final answer
    x = 332,158,465.80

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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.