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Finding the Fourth Proportional to 442,946.60, 664,419.90 and 255,739.40

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Solution

The fourth proportional to 442,946.60, 664,419.90 and 255,739.40 is: 383,609.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,946.60 : 664,419.90 = 255,739.40 : x
  2. Step 2: Convert to fraction form
    442,946.60/664,419.90 = 255,739.40/x
  3. Step 3: Cross multiply
    442,946.60x = 664,419.90 × 255,739.40
  4. Step 4: Simplify right side
    442,946.60x = 169,918,346,574.06
  5. Step 5: Solve for x
    x = 169,918,346,574.06/442,946.60
  6. Step 6: Final answer
    x = 383,609.10

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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.