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Finding the Fourth Proportional to 447,230.78, 670,703.91 and 147,655.58

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Solution

The fourth proportional to 447,230.78, 670,703.91 and 147,655.58 is: 221,436.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,230.78 : 670,703.91 = 147,655.58 : x
  2. Step 2: Convert to fraction form
    447,230.78/670,703.91 = 147,655.58/x
  3. Step 3: Cross multiply
    447,230.78x = 670,703.91 × 147,655.58
  4. Step 4: Simplify right side
    447,230.78x = 99,033,174,839.32
  5. Step 5: Solve for x
    x = 99,033,174,839.32/447,230.78
  6. Step 6: Final answer
    x = 221,436.40

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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.