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Finding the Fourth Proportional to 354,740.09, 489,552.78 and 201,774.35

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Solution

The fourth proportional to 354,740.09, 489,552.78 and 201,774.35 is: 278,455.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,740.09 : 489,552.78 = 201,774.35 : x
  2. Step 2: Convert to fraction form
    354,740.09/489,552.78 = 201,774.35/x
  3. Step 3: Cross multiply
    354,740.09x = 489,552.78 × 201,774.35
  4. Step 4: Simplify right side
    354,740.09x = 98,779,192,751.31
  5. Step 5: Solve for x
    x = 98,779,192,751.31/354,740.09
  6. Step 6: Final answer
    x = 278,455.11

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1.5x scale

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.