Home / 289,586,999.90-434,380,499.85-153,538,103.90

Finding the Fourth Proportional to 289,586,999.90, 434,380,499.85 and 153,538,103.90

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Solution

The fourth proportional to 289,586,999.90, 434,380,499.85 and 153,538,103.90 is: 230,307,155.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,586,999.90 : 434,380,499.85 = 153,538,103.90 : x
  2. Step 2: Convert to fraction form
    289,586,999.90/434,380,499.85 = 153,538,103.90/x
  3. Step 3: Cross multiply
    289,586,999.90x = 434,380,499.85 × 153,538,103.90
  4. Step 4: Simplify right side
    289,586,999.90x = 66,693,958,318,103,240
  5. Step 5: Solve for x
    x = 66,693,958,318,103,240/289,586,999.90
  6. Step 6: Final answer
    x = 230,307,155.85

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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.