Home / 291,440,015.20-437,663,907.60-155,391,119.20

Finding the Fourth Proportional to 291,440,015.20, 437,663,907.60 and 155,391,119.20

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Solution

The fourth proportional to 291,440,015.20, 437,663,907.60 and 155,391,119.20 is: 233,355,342.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,440,015.20 : 437,663,907.60 = 155,391,119.20 : x
  2. Step 2: Convert to fraction form
    291,440,015.20/437,663,907.60 = 155,391,119.20/x
  3. Step 3: Cross multiply
    291,440,015.20x = 437,663,907.60 × 155,391,119.20
  4. Step 4: Simplify right side
    291,440,015.20x = 68,009,084,435,409,384
  5. Step 5: Solve for x
    x = 68,009,084,435,409,384/291,440,015.20
  6. Step 6: Final answer
    x = 233,355,342.05

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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.