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Finding the Fourth Proportional to 447,117.40, 670,445.70 and 166,490.20

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Solution

The fourth proportional to 447,117.40, 670,445.70 and 166,490.20 is: 249,649.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,117.40 : 670,445.70 = 166,490.20 : x
  2. Step 2: Convert to fraction form
    447,117.40/670,445.70 = 166,490.20/x
  3. Step 3: Cross multiply
    447,117.40x = 670,445.70 × 166,490.20
  4. Step 4: Simplify right side
    447,117.40x = 111,622,638,682.14
  5. Step 5: Solve for x
    x = 111,622,638,682.14/447,117.40
  6. Step 6: Final answer
    x = 249,649.51

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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.