Home / 355,053.12-489,748.32-269,983.68

Finding the Fourth Proportional to 355,053.12, 489,748.32 and 269,983.68

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Solution

The fourth proportional to 355,053.12, 489,748.32 and 269,983.68 is: 372,406.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,053.12 : 489,748.32 = 269,983.68 : x
  2. Step 2: Convert to fraction form
    355,053.12/489,748.32 = 269,983.68/x
  3. Step 3: Cross multiply
    355,053.12x = 489,748.32 × 269,983.68
  4. Step 4: Simplify right side
    355,053.12x = 132,224,053,707.42
  5. Step 5: Solve for x
    x = 132,224,053,707.42/355,053.12
  6. Step 6: Final answer
    x = 372,406.40

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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.