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Finding the Fourth Proportional to 447,130.40, 670,695.60 and 147,657.20

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Solution

The fourth proportional to 447,130.40, 670,695.60 and 147,657.20 is: 221,485.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,130.40 : 670,695.60 = 147,657.20 : x
  2. Step 2: Convert to fraction form
    447,130.40/670,695.60 = 147,657.20/x
  3. Step 3: Cross multiply
    447,130.40x = 670,695.60 × 147,657.20
  4. Step 4: Simplify right side
    447,130.40x = 99,033,034,348.32
  5. Step 5: Solve for x
    x = 99,033,034,348.32/447,130.40
  6. Step 6: Final answer
    x = 221,485.80

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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.