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Finding the Fourth Proportional to 298,121.61, 411,403.86 and 162,152.69

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Solution

The fourth proportional to 298,121.61, 411,403.86 and 162,152.69 is: 223,768.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,121.61 : 411,403.86 = 162,152.69 : x
  2. Step 2: Convert to fraction form
    298,121.61/411,403.86 = 162,152.69/x
  3. Step 3: Cross multiply
    298,121.61x = 411,403.86 × 162,152.69
  4. Step 4: Simplify right side
    298,121.61x = 66,710,240,518.36
  5. Step 5: Solve for x
    x = 66,710,240,518.36/298,121.61
  6. Step 6: Final answer
    x = 223,768.55

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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.