Home / 388,420,374.46-536,020,331.82-209,804,261.97

Finding the Fourth Proportional to 388,420,374.46, 536,020,331.82 and 209,804,261.97

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Solution

The fourth proportional to 388,420,374.46, 536,020,331.82 and 209,804,261.97 is: 289,529,997.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,420,374.46 : 536,020,331.82 = 209,804,261.97 : x
  2. Step 2: Convert to fraction form
    388,420,374.46/536,020,331.82 = 209,804,261.97/x
  3. Step 3: Cross multiply
    388,420,374.46x = 536,020,331.82 × 209,804,261.97
  4. Step 4: Simplify right side
    388,420,374.46x = 112,459,350,114,680,480
  5. Step 5: Solve for x
    x = 112,459,350,114,680,480/388,420,374.46
  6. Step 6: Final answer
    x = 289,529,997.68

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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.