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Finding the Fourth Proportional to 525,662.10, 788,687.55 and 210,345.30

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Solution

The fourth proportional to 525,662.10, 788,687.55 and 210,345.30 is: 315,595.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,662.10 : 788,687.55 = 210,345.30 : x
  2. Step 2: Convert to fraction form
    525,662.10/788,687.55 = 210,345.30/x
  3. Step 3: Cross multiply
    525,662.10x = 788,687.55 × 210,345.30
  4. Step 4: Simplify right side
    525,662.10x = 165,896,719,311.02
  5. Step 5: Solve for x
    x = 165,896,719,311.02/525,662.10
  6. Step 6: Final answer
    x = 315,595.74

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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.