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Finding the Fourth Proportional to 401,033.40, 601,550.10 and 259,315.80

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Solution

The fourth proportional to 401,033.40, 601,550.10 and 259,315.80 is: 388,973.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,033.40 : 601,550.10 = 259,315.80 : x
  2. Step 2: Convert to fraction form
    401,033.40/601,550.10 = 259,315.80/x
  3. Step 3: Cross multiply
    401,033.40x = 601,550.10 × 259,315.80
  4. Step 4: Simplify right side
    401,033.40x = 155,991,445,421.58
  5. Step 5: Solve for x
    x = 155,991,445,421.58/401,033.40
  6. Step 6: Final answer
    x = 388,973.70

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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.