Home / 405,330.66-558,984.36-243,905.40

Finding the Fourth Proportional to 405,330.66, 558,984.36 and 243,905.40

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Solution

The fourth proportional to 405,330.66, 558,984.36 and 243,905.40 is: 336,365.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,330.66 : 558,984.36 = 243,905.40 : x
  2. Step 2: Convert to fraction form
    405,330.66/558,984.36 = 243,905.40/x
  3. Step 3: Cross multiply
    405,330.66x = 558,984.36 × 243,905.40
  4. Step 4: Simplify right side
    405,330.66x = 136,339,303,919.54
  5. Step 5: Solve for x
    x = 136,339,303,919.54/405,330.66
  6. Step 6: Final answer
    x = 336,365.63

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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.