Home / 291,315,281.60-402,015,249.89-157,353,197.22

Finding the Fourth Proportional to 291,315,281.60, 402,015,249.89 and 157,353,197.22

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Solution

The fourth proportional to 291,315,281.60, 402,015,249.89 and 157,353,197.22 is: 217,147,499.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,315,281.60 : 402,015,249.89 = 157,353,197.22 : x
  2. Step 2: Convert to fraction form
    291,315,281.60/402,015,249.89 = 157,353,197.22/x
  3. Step 3: Cross multiply
    291,315,281.60x = 402,015,249.89 × 157,353,197.22
  4. Step 4: Simplify right side
    291,315,281.60x = 63,258,384,901,782,136
  5. Step 5: Solve for x
    x = 63,258,384,901,782,136/291,315,281.60
  6. Step 6: Final answer
    x = 217,147,499.28

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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.