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Finding the Fourth Proportional to 370,512.37, 511,300.39 and 209,363.93

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Solution

The fourth proportional to 370,512.37, 511,300.39 and 209,363.93 is: 288,918.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,512.37 : 511,300.39 = 209,363.93 : x
  2. Step 2: Convert to fraction form
    370,512.37/511,300.39 = 209,363.93/x
  3. Step 3: Cross multiply
    370,512.37x = 511,300.39 × 209,363.93
  4. Step 4: Simplify right side
    370,512.37x = 107,047,859,060.93
  5. Step 5: Solve for x
    x = 107,047,859,060.93/370,512.37
  6. Step 6: Final answer
    x = 288,918.45

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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.