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Finding the Fourth Proportional to 528,138.48, 792,269.16 and 191,337.72

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Solution

The fourth proportional to 528,138.48, 792,269.16 and 191,337.72 is: 287,028.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,138.48 : 792,269.16 = 191,337.72 : x
  2. Step 2: Convert to fraction form
    528,138.48/792,269.16 = 191,337.72/x
  3. Step 3: Cross multiply
    528,138.48x = 792,269.16 × 191,337.72
  4. Step 4: Simplify right side
    528,138.48x = 151,590,974,700.72
  5. Step 5: Solve for x
    x = 151,590,974,700.72/528,138.48
  6. Step 6: Final answer
    x = 287,028.84

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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.