Home / 438,530.50-657,899.75-143,042.50

Finding the Fourth Proportional to 438,530.50, 657,899.75 and 143,042.50

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Solution

The fourth proportional to 438,530.50, 657,899.75 and 143,042.50 is: 214,597.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,530.50 : 657,899.75 = 143,042.50 : x
  2. Step 2: Convert to fraction form
    438,530.50/657,899.75 = 143,042.50/x
  3. Step 3: Cross multiply
    438,530.50x = 657,899.75 × 143,042.50
  4. Step 4: Simplify right side
    438,530.50x = 94,107,624,989.38
  5. Step 5: Solve for x
    x = 94,107,624,989.38/438,530.50
  6. Step 6: Final answer
    x = 214,597.67

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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.