Home / 289,688,789.33-399,781,041.95-165,953,381.30

Finding the Fourth Proportional to 289,688,789.33, 399,781,041.95 and 165,953,381.30

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Solution

The fourth proportional to 289,688,789.33, 399,781,041.95 and 165,953,381.30 is: 229,021,688.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,688,789.33 : 399,781,041.95 = 165,953,381.30 : x
  2. Step 2: Convert to fraction form
    289,688,789.33/399,781,041.95 = 165,953,381.30/x
  3. Step 3: Cross multiply
    289,688,789.33x = 399,781,041.95 × 165,953,381.30
  4. Step 4: Simplify right side
    289,688,789.33x = 66,345,015,691,239,648
  5. Step 5: Solve for x
    x = 66,345,015,691,239,648/289,688,789.33
  6. Step 6: Final answer
    x = 229,021,688.57

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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.