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Finding the Fourth Proportional to 259,807.80, 390,062.10 and 166,495.80

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Solution

The fourth proportional to 259,807.80, 390,062.10 and 166,495.80 is: 249,968.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,807.80 : 390,062.10 = 166,495.80 : x
  2. Step 2: Convert to fraction form
    259,807.80/390,062.10 = 166,495.80/x
  3. Step 3: Cross multiply
    259,807.80x = 390,062.10 × 166,495.80
  4. Step 4: Simplify right side
    259,807.80x = 64,943,701,389.18
  5. Step 5: Solve for x
    x = 64,943,701,389.18/259,807.80
  6. Step 6: Final answer
    x = 249,968.25

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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.