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Finding the Fourth Proportional to 299,686.60, 448,946.70 and 166,328.20

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Solution

The fourth proportional to 299,686.60, 448,946.70 and 166,328.20 is: 249,168.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,686.60 : 448,946.70 = 166,328.20 : x
  2. Step 2: Convert to fraction form
    299,686.60/448,946.70 = 166,328.20/x
  3. Step 3: Cross multiply
    299,686.60x = 448,946.70 × 166,328.20
  4. Step 4: Simplify right side
    299,686.60x = 74,672,496,506.94
  5. Step 5: Solve for x
    x = 74,672,496,506.94/299,686.60
  6. Step 6: Final answer
    x = 249,168.62

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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.