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Finding the Fourth Proportional to 298,718.10, 448,077.15 and 99,069.30

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Solution

The fourth proportional to 298,718.10, 448,077.15 and 99,069.30 is: 148,603.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,718.10 : 448,077.15 = 99,069.30 : x
  2. Step 2: Convert to fraction form
    298,718.10/448,077.15 = 99,069.30/x
  3. Step 3: Cross multiply
    298,718.10x = 448,077.15 × 99,069.30
  4. Step 4: Simplify right side
    298,718.10x = 44,390,689,596.50
  5. Step 5: Solve for x
    x = 44,390,689,596.50/298,718.10
  6. Step 6: Final answer
    x = 148,603.95

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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.