Home / 281,223,122.40-421,834,683.60-76,771,864.80

Finding the Fourth Proportional to 281,223,122.40, 421,834,683.60 and 76,771,864.80

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Solution

The fourth proportional to 281,223,122.40, 421,834,683.60 and 76,771,864.80 is: 115,157,797.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,223,122.40 : 421,834,683.60 = 76,771,864.80 : x
  2. Step 2: Convert to fraction form
    281,223,122.40/421,834,683.60 = 76,771,864.80/x
  3. Step 3: Cross multiply
    281,223,122.40x = 421,834,683.60 × 76,771,864.80
  4. Step 4: Simplify right side
    281,223,122.40x = 32,385,035,297,289,976
  5. Step 5: Solve for x
    x = 32,385,035,297,289,976/281,223,122.40
  6. Step 6: Final answer
    x = 115,157,797.20

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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.