Home / 399,435,433.04-551,173,151.53-220,795,188.40

Finding the Fourth Proportional to 399,435,433.04, 551,173,151.53 and 220,795,188.40

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Solution

The fourth proportional to 399,435,433.04, 551,173,151.53 and 220,795,188.40 is: 304,670,967.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,435,433.04 : 551,173,151.53 = 220,795,188.40 : x
  2. Step 2: Convert to fraction form
    399,435,433.04/551,173,151.53 = 220,795,188.40/x
  3. Step 3: Cross multiply
    399,435,433.04x = 551,173,151.53 × 220,795,188.40
  4. Step 4: Simplify right side
    399,435,433.04x = 121,696,379,833,116,976
  5. Step 5: Solve for x
    x = 121,696,379,833,116,976/399,435,433.04
  6. Step 6: Final answer
    x = 304,670,967.49

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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.