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Finding the Fourth Proportional to 525,709.60, 788,758.80 and 210,392.80

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Solution

The fourth proportional to 525,709.60, 788,758.80 and 210,392.80 is: 315,667.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,709.60 : 788,758.80 = 210,392.80 : x
  2. Step 2: Convert to fraction form
    525,709.60/788,758.80 = 210,392.80/x
  3. Step 3: Cross multiply
    525,709.60x = 788,758.80 × 210,392.80
  4. Step 4: Simplify right side
    525,709.60x = 165,949,172,456.64
  5. Step 5: Solve for x
    x = 165,949,172,456.64/525,709.60
  6. Step 6: Final answer
    x = 315,667.00

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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.