Home / 289,721,611.60-434,582,417.40-221,697,163.60

Finding the Fourth Proportional to 289,721,611.60, 434,582,417.40 and 221,697,163.60

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Solution

The fourth proportional to 289,721,611.60, 434,582,417.40 and 221,697,163.60 is: 332,545,745.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,721,611.60 : 434,582,417.40 = 221,697,163.60 : x
  2. Step 2: Convert to fraction form
    289,721,611.60/434,582,417.40 = 221,697,163.60/x
  3. Step 3: Cross multiply
    289,721,611.60x = 434,582,417.40 × 221,697,163.60
  4. Step 4: Simplify right side
    289,721,611.60x = 96,345,689,288,011,280
  5. Step 5: Solve for x
    x = 96,345,689,288,011,280/289,721,611.60
  6. Step 6: Final answer
    x = 332,545,745.40

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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.