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Finding the Fourth Proportional to 299,666.60, 448,916.70 and 166,308.20

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Solution

The fourth proportional to 299,666.60, 448,916.70 and 166,308.20 is: 249,138.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,666.60 : 448,916.70 = 166,308.20 : x
  2. Step 2: Convert to fraction form
    299,666.60/448,916.70 = 166,308.20/x
  3. Step 3: Cross multiply
    299,666.60x = 448,916.70 × 166,308.20
  4. Step 4: Simplify right side
    299,666.60x = 74,658,528,326.94
  5. Step 5: Solve for x
    x = 74,658,528,326.94/299,666.60
  6. Step 6: Final answer
    x = 249,138.64

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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.