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Finding the Fourth Proportional to 448,265.60, 671,620.80 and 290,412.80

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Solution

The fourth proportional to 448,265.60, 671,620.80 and 290,412.80 is: 435,115.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,265.60 : 671,620.80 = 290,412.80 : x
  2. Step 2: Convert to fraction form
    448,265.60/671,620.80 = 290,412.80/x
  3. Step 3: Cross multiply
    448,265.60x = 671,620.80 × 290,412.80
  4. Step 4: Simplify right side
    448,265.60x = 195,047,277,066.24
  5. Step 5: Solve for x
    x = 195,047,277,066.24/448,265.60
  6. Step 6: Final answer
    x = 435,115.43

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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.