Home / 388,420,375.47-536,020,333.19-209,804,262.96

Finding the Fourth Proportional to 388,420,375.47, 536,020,333.19 and 209,804,262.96

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Solution

The fourth proportional to 388,420,375.47, 536,020,333.19 and 209,804,262.96 is: 289,529,999.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,420,375.47 : 536,020,333.19 = 209,804,262.96 : x
  2. Step 2: Convert to fraction form
    388,420,375.47/536,020,333.19 = 209,804,262.96/x
  3. Step 3: Cross multiply
    388,420,375.47x = 536,020,333.19 × 209,804,262.96
  4. Step 4: Simplify right side
    388,420,375.47x = 112,459,350,936,501,584
  5. Step 5: Solve for x
    x = 112,459,350,936,501,584/388,420,375.47
  6. Step 6: Final answer
    x = 289,529,999.04

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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.