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Finding the Fourth Proportional to 443,313.60, 664,970.40 and 256,106.40

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Solution

The fourth proportional to 443,313.60, 664,970.40 and 256,106.40 is: 384,159.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,313.60 : 664,970.40 = 256,106.40 : x
  2. Step 2: Convert to fraction form
    443,313.60/664,970.40 = 256,106.40/x
  3. Step 3: Cross multiply
    443,313.60x = 664,970.40 × 256,106.40
  4. Step 4: Simplify right side
    443,313.60x = 170,303,175,250.56
  5. Step 5: Solve for x
    x = 170,303,175,250.56/443,313.60
  6. Step 6: Final answer
    x = 384,159.60

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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.