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Finding the Fourth Proportional to 438,536, 657,908 and 143,048

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Solution

The fourth proportional to 438,536, 657,908 and 143,048 is: 214,605.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,536 : 657,908 = 143,048 : x
  2. Step 2: Convert to fraction form
    438,536/657,908 = 143,048/x
  3. Step 3: Cross multiply
    438,536x = 657,908 × 143,048
  4. Step 4: Simplify right side
    438,536x = 94,112,423,584
  5. Step 5: Solve for x
    x = 94,112,423,584/438,536
  6. Step 6: Final answer
    x = 214,605.92

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.