Home / 208,015,266.90-312,022,900.35-100,519,842.90

Finding the Fourth Proportional to 208,015,266.90, 312,022,900.35 and 100,519,842.90

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Solution

The fourth proportional to 208,015,266.90, 312,022,900.35 and 100,519,842.90 is: 150,779,764.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,015,266.90 : 312,022,900.35 = 100,519,842.90 : x
  2. Step 2: Convert to fraction form
    208,015,266.90/312,022,900.35 = 100,519,842.90/x
  3. Step 3: Cross multiply
    208,015,266.90x = 312,022,900.35 × 100,519,842.90
  4. Step 4: Simplify right side
    208,015,266.90x = 31,364,492,924,384,360
  5. Step 5: Solve for x
    x = 31,364,492,924,384,360/208,015,266.90
  6. Step 6: Final answer
    x = 150,779,764.35

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1.5x scale

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.