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Finding the Fourth Proportional to 298,075.56, 447,113.28 and 76,459.56

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Solution

The fourth proportional to 298,075.56, 447,113.28 and 76,459.56 is: 114,689.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,075.56 : 447,113.28 = 76,459.56 : x
  2. Step 2: Convert to fraction form
    298,075.56/447,113.28 = 76,459.56/x
  3. Step 3: Cross multiply
    298,075.56x = 447,113.28 × 76,459.56
  4. Step 4: Simplify right side
    298,075.56x = 34,186,084,658.96
  5. Step 5: Solve for x
    x = 34,186,084,658.96/298,075.56
  6. Step 6: Final answer
    x = 114,689.32

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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.