Home / 221,249,440.42-305,331,454.32-120,783,234.64

Finding the Fourth Proportional to 221,249,440.42, 305,331,454.32 and 120,783,234.64

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Solution

The fourth proportional to 221,249,440.42, 305,331,454.32 and 120,783,234.64 is: 166,684,808.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,249,440.42 : 305,331,454.32 = 120,783,234.64 : x
  2. Step 2: Convert to fraction form
    221,249,440.42/305,331,454.32 = 120,783,234.64/x
  3. Step 3: Cross multiply
    221,249,440.42x = 305,331,454.32 × 120,783,234.64
  4. Step 4: Simplify right side
    221,249,440.42x = 36,878,920,690,105,000
  5. Step 5: Solve for x
    x = 36,878,920,690,105,000/221,249,440.42
  6. Step 6: Final answer
    x = 166,684,808.87

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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.