Home / 289,688,389.98-399,780,490.80-165,952,981.92

Finding the Fourth Proportional to 289,688,389.98, 399,780,490.80 and 165,952,981.92

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Solution

The fourth proportional to 289,688,389.98, 399,780,490.80 and 165,952,981.92 is: 229,021,137.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,688,389.98 : 399,780,490.80 = 165,952,981.92 : x
  2. Step 2: Convert to fraction form
    289,688,389.98/399,780,490.80 = 165,952,981.92/x
  3. Step 3: Cross multiply
    289,688,389.98x = 399,780,490.80 × 165,952,981.92
  4. Step 4: Simplify right side
    289,688,389.98x = 66,344,764,561,701,120
  5. Step 5: Solve for x
    x = 66,344,764,561,701,120/289,688,389.98
  6. Step 6: Final answer
    x = 229,021,137.39

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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.