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Finding the Fourth Proportional to 391,104.80, 586,365.60 and 166,281.20

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Solution

The fourth proportional to 391,104.80, 586,365.60 and 166,281.20 is: 249,297.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,104.80 : 586,365.60 = 166,281.20 : x
  2. Step 2: Convert to fraction form
    391,104.80/586,365.60 = 166,281.20/x
  3. Step 3: Cross multiply
    391,104.80x = 586,365.60 × 166,281.20
  4. Step 4: Simplify right side
    391,104.80x = 97,501,575,606.72
  5. Step 5: Solve for x
    x = 97,501,575,606.72/391,104.80
  6. Step 6: Final answer
    x = 249,297.82

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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.