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Finding the Fourth Proportional to 158,478,496.80, 221,416,399.20 and 158,478,496.80

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Solution

The fourth proportional to 158,478,496.80, 221,416,399.20 and 158,478,496.80 is: 221,416,399.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,478,496.80 : 221,416,399.20 = 158,478,496.80 : x
  2. Step 2: Convert to fraction form
    158,478,496.80/221,416,399.20 = 158,478,496.80/x
  3. Step 3: Cross multiply
    158,478,496.80x = 221,416,399.20 × 158,478,496.80
  4. Step 4: Simplify right side
    158,478,496.80x = 35,089,738,112,084,724
  5. Step 5: Solve for x
    x = 35,089,738,112,084,724/158,478,496.80
  6. Step 6: Final answer
    x = 221,416,399.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.