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Finding the Fourth Proportional to 571,692.88, 856,637 and 211,369.28

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Solution

The fourth proportional to 571,692.88, 856,637 and 211,369.28 is: 316,720.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,692.88 : 856,637 = 211,369.28 : x
  2. Step 2: Convert to fraction form
    571,692.88/856,637 = 211,369.28/x
  3. Step 3: Cross multiply
    571,692.88x = 856,637 × 211,369.28
  4. Step 4: Simplify right side
    571,692.88x = 181,066,745,911.36
  5. Step 5: Solve for x
    x = 181,066,745,911.36/571,692.88
  6. Step 6: Final answer
    x = 316,720.31

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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.