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Finding the Fourth Proportional to 316,028.16, 436,129.92 and 208,692.48

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Solution

The fourth proportional to 316,028.16, 436,129.92 and 208,692.48 is: 288,002.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,028.16 : 436,129.92 = 208,692.48 : x
  2. Step 2: Convert to fraction form
    316,028.16/436,129.92 = 208,692.48/x
  3. Step 3: Cross multiply
    316,028.16x = 436,129.92 × 208,692.48
  4. Step 4: Simplify right side
    316,028.16x = 91,017,034,607.00
  5. Step 5: Solve for x
    x = 91,017,034,607.00/316,028.16
  6. Step 6: Final answer
    x = 288,002.93

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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.