Home / 352,358,428.80-528,537,643.20-261,659,164.80

Finding the Fourth Proportional to 352,358,428.80, 528,537,643.20 and 261,659,164.80

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Solution

The fourth proportional to 352,358,428.80, 528,537,643.20 and 261,659,164.80 is: 392,488,747.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,358,428.80 : 528,537,643.20 = 261,659,164.80 : x
  2. Step 2: Convert to fraction form
    352,358,428.80/528,537,643.20 = 261,659,164.80/x
  3. Step 3: Cross multiply
    352,358,428.80x = 528,537,643.20 × 261,659,164.80
  4. Step 4: Simplify right side
    352,358,428.80x = 138,296,718,285,072,400
  5. Step 5: Solve for x
    x = 138,296,718,285,072,400/352,358,428.80
  6. Step 6: Final answer
    x = 392,488,747.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.