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Finding the Fourth Proportional to 418,166.40, 626,558.40 and 355,958.40

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Solution

The fourth proportional to 418,166.40, 626,558.40 and 355,958.40 is: 533,349.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,166.40 : 626,558.40 = 355,958.40 : x
  2. Step 2: Convert to fraction form
    418,166.40/626,558.40 = 355,958.40/x
  3. Step 3: Cross multiply
    418,166.40x = 626,558.40 × 355,958.40
  4. Step 4: Simplify right side
    418,166.40x = 223,028,725,570.56
  5. Step 5: Solve for x
    x = 223,028,725,570.56/418,166.40
  6. Step 6: Final answer
    x = 533,349.23

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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.