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Finding the Fourth Proportional to 486,018.20, 728,662.80 and 249,530.60

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Solution

The fourth proportional to 486,018.20, 728,662.80 and 249,530.60 is: 374,108.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,018.20 : 728,662.80 = 249,530.60 : x
  2. Step 2: Convert to fraction form
    486,018.20/728,662.80 = 249,530.60/x
  3. Step 3: Cross multiply
    486,018.20x = 728,662.80 × 249,530.60
  4. Step 4: Simplify right side
    486,018.20x = 181,823,665,681.68
  5. Step 5: Solve for x
    x = 181,823,665,681.68/486,018.20
  6. Step 6: Final answer
    x = 374,108.76

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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.