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Finding the Fourth Proportional to 438,636.15, 657,855.81 and 201,751.29

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Solution

The fourth proportional to 438,636.15, 657,855.81 and 201,751.29 is: 302,581.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,636.15 : 657,855.81 = 201,751.29 : x
  2. Step 2: Convert to fraction form
    438,636.15/657,855.81 = 201,751.29/x
  3. Step 3: Cross multiply
    438,636.15x = 657,855.81 × 201,751.29
  4. Step 4: Simplify right side
    438,636.15x = 132,723,258,301.50
  5. Step 5: Solve for x
    x = 132,723,258,301.50/438,636.15
  6. Step 6: Final answer
    x = 302,581.67

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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.