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Finding the Fourth Proportional to 359,383.80, 538,362.90 and 315,060.60

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Solution

The fourth proportional to 359,383.80, 538,362.90 and 315,060.60 is: 471,966.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,383.80 : 538,362.90 = 315,060.60 : x
  2. Step 2: Convert to fraction form
    359,383.80/538,362.90 = 315,060.60/x
  3. Step 3: Cross multiply
    359,383.80x = 538,362.90 × 315,060.60
  4. Step 4: Simplify right side
    359,383.80x = 169,616,938,291.74
  5. Step 5: Solve for x
    x = 169,616,938,291.74/359,383.80
  6. Step 6: Final answer
    x = 471,966.01

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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.