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Finding the Fourth Proportional to 298,417.40, 447,626.10 and 251,178.20

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Solution

The fourth proportional to 298,417.40, 447,626.10 and 251,178.20 is: 376,767.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,417.40 : 447,626.10 = 251,178.20 : x
  2. Step 2: Convert to fraction form
    298,417.40/447,626.10 = 251,178.20/x
  3. Step 3: Cross multiply
    298,417.40x = 447,626.10 × 251,178.20
  4. Step 4: Simplify right side
    298,417.40x = 112,433,918,071.02
  5. Step 5: Solve for x
    x = 112,433,918,071.02/298,417.40
  6. Step 6: Final answer
    x = 376,767.30

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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.