Home / 391,462,749.92-540,237,987.72-242,831,759.90

Finding the Fourth Proportional to 391,462,749.92, 540,237,987.72 and 242,831,759.90

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Solution

The fourth proportional to 391,462,749.92, 540,237,987.72 and 242,831,759.90 is: 335,119,858.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,462,749.92 : 540,237,987.72 = 242,831,759.90 : x
  2. Step 2: Convert to fraction form
    391,462,749.92/540,237,987.72 = 242,831,759.90/x
  3. Step 3: Cross multiply
    391,462,749.92x = 540,237,987.72 × 242,831,759.90
  4. Step 4: Simplify right side
    391,462,749.92x = 131,186,941,319,270,368
  5. Step 5: Solve for x
    x = 131,186,941,319,270,368/391,462,749.92
  6. Step 6: Final answer
    x = 335,119,858.39

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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.