Home / 208,015,460.40-312,023,190.60-100,520,036.40

Finding the Fourth Proportional to 208,015,460.40, 312,023,190.60 and 100,520,036.40

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Solution

The fourth proportional to 208,015,460.40, 312,023,190.60 and 100,520,036.40 is: 150,780,054.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,015,460.40 : 312,023,190.60 = 100,520,036.40 : x
  2. Step 2: Convert to fraction form
    208,015,460.40/312,023,190.60 = 100,520,036.40/x
  3. Step 3: Cross multiply
    208,015,460.40x = 312,023,190.60 × 100,520,036.40
  4. Step 4: Simplify right side
    208,015,460.40x = 31,364,582,476,756,144
  5. Step 5: Solve for x
    x = 31,364,582,476,756,144/208,015,460.40
  6. Step 6: Final answer
    x = 150,780,054.60

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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.