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Finding the Fourth Proportional to 528,083.70, 792,514.35 and 212,766.90

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Solution

The fourth proportional to 528,083.70, 792,514.35 and 212,766.90 is: 319,307.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,083.70 : 792,514.35 = 212,766.90 : x
  2. Step 2: Convert to fraction form
    528,083.70/792,514.35 = 212,766.90/x
  3. Step 3: Cross multiply
    528,083.70x = 792,514.35 × 212,766.90
  4. Step 4: Simplify right side
    528,083.70x = 168,620,821,455.02
  5. Step 5: Solve for x
    x = 168,620,821,455.02/528,083.70
  6. Step 6: Final answer
    x = 319,307.00

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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.