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Finding the Fourth Proportional to 476,341.78, 657,349.05 and 261,485.50

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Solution

The fourth proportional to 476,341.78, 657,349.05 and 261,485.50 is: 360,848.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,341.78 : 657,349.05 = 261,485.50 : x
  2. Step 2: Convert to fraction form
    476,341.78/657,349.05 = 261,485.50/x
  3. Step 3: Cross multiply
    476,341.78x = 657,349.05 × 261,485.50
  4. Step 4: Simplify right side
    476,341.78x = 171,887,245,013.78
  5. Step 5: Solve for x
    x = 171,887,245,013.78/476,341.78
  6. Step 6: Final answer
    x = 360,848.56

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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.