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Finding the Fourth Proportional to 526,374.72, 789,356.16 and 171,302.40

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Solution

The fourth proportional to 526,374.72, 789,356.16 and 171,302.40 is: 256,886.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,374.72 : 789,356.16 = 171,302.40 : x
  2. Step 2: Convert to fraction form
    526,374.72/789,356.16 = 171,302.40/x
  3. Step 3: Cross multiply
    526,374.72x = 789,356.16 × 171,302.40
  4. Step 4: Simplify right side
    526,374.72x = 135,218,604,662.78
  5. Step 5: Solve for x
    x = 135,218,604,662.78/526,374.72
  6. Step 6: Final answer
    x = 256,886.59

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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.