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Finding the Fourth Proportional to 257,802.70, 355,762.37 and 143,074.67

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Solution

The fourth proportional to 257,802.70, 355,762.37 and 143,074.67 is: 197,440.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,802.70 : 355,762.37 = 143,074.67 : x
  2. Step 2: Convert to fraction form
    257,802.70/355,762.37 = 143,074.67/x
  3. Step 3: Cross multiply
    257,802.70x = 355,762.37 × 143,074.67
  4. Step 4: Simplify right side
    257,802.70x = 50,900,584,266.21
  5. Step 5: Solve for x
    x = 50,900,584,266.21/257,802.70
  6. Step 6: Final answer
    x = 197,440.07

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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.