Home / 218,743,232.40-328,114,848.60-209,424,013.20

Finding the Fourth Proportional to 218,743,232.40, 328,114,848.60 and 209,424,013.20

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Solution

The fourth proportional to 218,743,232.40, 328,114,848.60 and 209,424,013.20 is: 314,136,019.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,743,232.40 : 328,114,848.60 = 209,424,013.20 : x
  2. Step 2: Convert to fraction form
    218,743,232.40/328,114,848.60 = 209,424,013.20/x
  3. Step 3: Cross multiply
    218,743,232.40x = 328,114,848.60 × 209,424,013.20
  4. Step 4: Simplify right side
    218,743,232.40x = 68,715,128,384,322,400
  5. Step 5: Solve for x
    x = 68,715,128,384,322,400/218,743,232.40
  6. Step 6: Final answer
    x = 314,136,019.80

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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.