Home / 289,522,899.90-399,539,728.58-165,787,491.87

Finding the Fourth Proportional to 289,522,899.90, 399,539,728.58 and 165,787,491.87

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Solution

The fourth proportional to 289,522,899.90, 399,539,728.58 and 165,787,491.87 is: 228,785,666.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,522,899.90 : 399,539,728.58 = 165,787,491.87 : x
  2. Step 2: Convert to fraction form
    289,522,899.90/399,539,728.58 = 165,787,491.87/x
  3. Step 3: Cross multiply
    289,522,899.90x = 399,539,728.58 × 165,787,491.87
  4. Step 4: Simplify right side
    289,522,899.90x = 66,238,689,502,869,816
  5. Step 5: Solve for x
    x = 66,238,689,502,869,816/289,522,899.90
  6. Step 6: Final answer
    x = 228,785,666.09

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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.