Home / 355,052.93-489,985.13-209,983.07

Finding the Fourth Proportional to 355,052.93, 489,985.13 and 209,983.07

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Solution

The fourth proportional to 355,052.93, 489,985.13 and 209,983.07 is: 289,783.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,052.93 : 489,985.13 = 209,983.07 : x
  2. Step 2: Convert to fraction form
    355,052.93/489,985.13 = 209,983.07/x
  3. Step 3: Cross multiply
    355,052.93x = 489,985.13 × 209,983.07
  4. Step 4: Simplify right side
    355,052.93x = 102,888,579,445.59
  5. Step 5: Solve for x
    x = 102,888,579,445.59/355,052.93
  6. Step 6: Final answer
    x = 289,783.78

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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.