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Finding the Fourth Proportional to 384,072.60, 575,331.30 and 265,877.40

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Solution

The fourth proportional to 384,072.60, 575,331.30 and 265,877.40 is: 398,277.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,072.60 : 575,331.30 = 265,877.40 : x
  2. Step 2: Convert to fraction form
    384,072.60/575,331.30 = 265,877.40/x
  3. Step 3: Cross multiply
    384,072.60x = 575,331.30 × 265,877.40
  4. Step 4: Simplify right side
    384,072.60x = 152,967,590,182.62
  5. Step 5: Solve for x
    x = 152,967,590,182.62/384,072.60
  6. Step 6: Final answer
    x = 398,277.80

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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.