Home / 309,893,956.12-427,648,491.90-170,677,671.76

Finding the Fourth Proportional to 309,893,956.12, 427,648,491.90 and 170,677,671.76

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Solution

The fourth proportional to 309,893,956.12, 427,648,491.90 and 170,677,671.76 is: 235,532,340.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,893,956.12 : 427,648,491.90 = 170,677,671.76 : x
  2. Step 2: Convert to fraction form
    309,893,956.12/427,648,491.90 = 170,677,671.76/x
  3. Step 3: Cross multiply
    309,893,956.12x = 427,648,491.90 × 170,677,671.76
  4. Step 4: Simplify right side
    309,893,956.12x = 72,990,048,929,167,216
  5. Step 5: Solve for x
    x = 72,990,048,929,167,216/309,893,956.12
  6. Step 6: Final answer
    x = 235,532,340.94

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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.