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Finding the Fourth Proportional to 447,139.76, 670,776.40 and 147,652

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Solution

The fourth proportional to 447,139.76, 670,776.40 and 147,652 is: 221,500.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,139.76 : 670,776.40 = 147,652 : x
  2. Step 2: Convert to fraction form
    447,139.76/670,776.40 = 147,652/x
  3. Step 3: Cross multiply
    447,139.76x = 670,776.40 × 147,652
  4. Step 4: Simplify right side
    447,139.76x = 99,041,477,012.80
  5. Step 5: Solve for x
    x = 99,041,477,012.80/447,139.76
  6. Step 6: Final answer
    x = 221,500.05

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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.