Home / 388,334,542.56-535,901,648.24-209,718,413.70

Finding the Fourth Proportional to 388,334,542.56, 535,901,648.24 and 209,718,413.70

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Solution

The fourth proportional to 388,334,542.56, 535,901,648.24 and 209,718,413.70 is: 289,411,399.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,334,542.56 : 535,901,648.24 = 209,718,413.70 : x
  2. Step 2: Convert to fraction form
    388,334,542.56/535,901,648.24 = 209,718,413.70/x
  3. Step 3: Cross multiply
    388,334,542.56x = 535,901,648.24 × 209,718,413.70
  4. Step 4: Simplify right side
    388,334,542.56x = 112,388,443,565,836,416
  5. Step 5: Solve for x
    x = 112,388,443,565,836,416/388,334,542.56
  6. Step 6: Final answer
    x = 289,411,399.83

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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.