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Finding the Fourth Proportional to 438,998.60, 658,526.70 and 123,465.80

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Solution

The fourth proportional to 438,998.60, 658,526.70 and 123,465.80 is: 185,206.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,998.60 : 658,526.70 = 123,465.80 : x
  2. Step 2: Convert to fraction form
    438,998.60/658,526.70 = 123,465.80/x
  3. Step 3: Cross multiply
    438,998.60x = 658,526.70 × 123,465.80
  4. Step 4: Simplify right side
    438,998.60x = 81,305,525,836.86
  5. Step 5: Solve for x
    x = 81,305,525,836.86/438,998.60
  6. Step 6: Final answer
    x = 185,206.80

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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.