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Finding the Fourth Proportional to 289,263.20, 433,894.80 and 263,458.40

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Solution

The fourth proportional to 289,263.20, 433,894.80 and 263,458.40 is: 395,187.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,263.20 : 433,894.80 = 263,458.40 : x
  2. Step 2: Convert to fraction form
    289,263.20/433,894.80 = 263,458.40/x
  3. Step 3: Cross multiply
    289,263.20x = 433,894.80 × 263,458.40
  4. Step 4: Simplify right side
    289,263.20x = 114,313,229,776.32
  5. Step 5: Solve for x
    x = 114,313,229,776.32/289,263.20
  6. Step 6: Final answer
    x = 395,187.60

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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.