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Finding the Fourth Proportional to 421,557.12, 581,749.20 and 237,798

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Solution

The fourth proportional to 421,557.12, 581,749.20 and 237,798 is: 328,161.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,557.12 : 581,749.20 = 237,798 : x
  2. Step 2: Convert to fraction form
    421,557.12/581,749.20 = 237,798/x
  3. Step 3: Cross multiply
    421,557.12x = 581,749.20 × 237,798
  4. Step 4: Simplify right side
    421,557.12x = 138,338,796,261.60
  5. Step 5: Solve for x
    x = 138,338,796,261.60/421,557.12
  6. Step 6: Final answer
    x = 328,161.45

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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.