Home / 289,688,785.83-399,781,037.12-165,953,377.80

Finding the Fourth Proportional to 289,688,785.83, 399,781,037.12 and 165,953,377.80

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Solution

The fourth proportional to 289,688,785.83, 399,781,037.12 and 165,953,377.80 is: 229,021,683.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,688,785.83 : 399,781,037.12 = 165,953,377.80 : x
  2. Step 2: Convert to fraction form
    289,688,785.83/399,781,037.12 = 165,953,377.80/x
  3. Step 3: Cross multiply
    289,688,785.83x = 399,781,037.12 × 165,953,377.80
  4. Step 4: Simplify right side
    289,688,785.83x = 66,345,013,489,621,424
  5. Step 5: Solve for x
    x = 66,345,013,489,621,424/289,688,785.83
  6. Step 6: Final answer
    x = 229,021,683.73

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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.