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Finding the Fourth Proportional to 305,303.60, 421,527.48 and 190,756.64

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Solution

The fourth proportional to 305,303.60, 421,527.48 and 190,756.64 is: 263,374.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,303.60 : 421,527.48 = 190,756.64 : x
  2. Step 2: Convert to fraction form
    305,303.60/421,527.48 = 190,756.64/x
  3. Step 3: Cross multiply
    305,303.60x = 421,527.48 × 190,756.64
  4. Step 4: Simplify right side
    305,303.60x = 80,409,165,752.47
  5. Step 5: Solve for x
    x = 80,409,165,752.47/305,303.60
  6. Step 6: Final answer
    x = 263,374.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.