Home / 208,638,400.80-312,957,601.20-192,514,087.20

Finding the Fourth Proportional to 208,638,400.80, 312,957,601.20 and 192,514,087.20

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Solution

The fourth proportional to 208,638,400.80, 312,957,601.20 and 192,514,087.20 is: 288,771,130.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,638,400.80 : 312,957,601.20 = 192,514,087.20 : x
  2. Step 2: Convert to fraction form
    208,638,400.80/312,957,601.20 = 192,514,087.20/x
  3. Step 3: Cross multiply
    208,638,400.80x = 312,957,601.20 × 192,514,087.20
  4. Step 4: Simplify right side
    208,638,400.80x = 60,248,746,927,319,616
  5. Step 5: Solve for x
    x = 60,248,746,927,319,616/208,638,400.80
  6. Step 6: Final answer
    x = 288,771,130.80

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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.