Home / 388,968,810.50-536,770,650.48-212,755,264.47

Finding the Fourth Proportional to 388,968,810.50, 536,770,650.48 and 212,755,264.47

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Solution

The fourth proportional to 388,968,810.50, 536,770,650.48 and 212,755,264.47 is: 293,598,814.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,968,810.50 : 536,770,650.48 = 212,755,264.47 : x
  2. Step 2: Convert to fraction form
    388,968,810.50/536,770,650.48 = 212,755,264.47/x
  3. Step 3: Cross multiply
    388,968,810.50x = 536,770,650.48 × 212,755,264.47
  4. Step 4: Simplify right side
    388,968,810.50x = 114,200,781,702,606,336
  5. Step 5: Solve for x
    x = 114,200,781,702,606,336/388,968,810.50
  6. Step 6: Final answer
    x = 293,598,814.66

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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.