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Finding the Fourth Proportional to 528,690.48, 793,191.24 and 212,984.88

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Solution

The fourth proportional to 528,690.48, 793,191.24 and 212,984.88 is: 319,539.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,690.48 : 793,191.24 = 212,984.88 : x
  2. Step 2: Convert to fraction form
    528,690.48/793,191.24 = 212,984.88/x
  3. Step 3: Cross multiply
    528,690.48x = 793,191.24 × 212,984.88
  4. Step 4: Simplify right side
    528,690.48x = 168,937,741,068.45
  5. Step 5: Solve for x
    x = 168,937,741,068.45/528,690.48
  6. Step 6: Final answer
    x = 319,539.97

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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.