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Finding the Fourth Proportional to 298,019.55, 447,029.40 and 87,657.48

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Solution

The fourth proportional to 298,019.55, 447,029.40 and 87,657.48 is: 131,486.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,019.55 : 447,029.40 = 87,657.48 : x
  2. Step 2: Convert to fraction form
    298,019.55/447,029.40 = 87,657.48/x
  3. Step 3: Cross multiply
    298,019.55x = 447,029.40 × 87,657.48
  4. Step 4: Simplify right side
    298,019.55x = 39,185,470,689.91
  5. Step 5: Solve for x
    x = 39,185,470,689.91/298,019.55
  6. Step 6: Final answer
    x = 131,486.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.