Home / 386,243,402.56-532,999,670.52-218,990,915.44

Finding the Fourth Proportional to 386,243,402.56, 532,999,670.52 and 218,990,915.44

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Solution

The fourth proportional to 386,243,402.56, 532,999,670.52 and 218,990,915.44 is: 302,198,264.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,243,402.56 : 532,999,670.52 = 218,990,915.44 : x
  2. Step 2: Convert to fraction form
    386,243,402.56/532,999,670.52 = 218,990,915.44/x
  3. Step 3: Cross multiply
    386,243,402.56x = 532,999,670.52 × 218,990,915.44
  4. Step 4: Simplify right side
    386,243,402.56x = 116,722,085,776,393,168
  5. Step 5: Solve for x
    x = 116,722,085,776,393,168/386,243,402.56
  6. Step 6: Final answer
    x = 302,198,264.11

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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.