Home / 289,941.40-434,933.70-102,928.60

Finding the Fourth Proportional to 289,941.40, 434,933.70 and 102,928.60

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Solution

The fourth proportional to 289,941.40, 434,933.70 and 102,928.60 is: 154,400.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,941.40 : 434,933.70 = 102,928.60 : x
  2. Step 2: Convert to fraction form
    289,941.40/434,933.70 = 102,928.60/x
  3. Step 3: Cross multiply
    289,941.40x = 434,933.70 × 102,928.60
  4. Step 4: Simplify right side
    289,941.40x = 44,767,116,833.82
  5. Step 5: Solve for x
    x = 44,767,116,833.82/289,941.40
  6. Step 6: Final answer
    x = 154,400.57

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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.