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Finding the Fourth Proportional to 525,715.40, 788,342.70 and 210,067.40

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Solution

The fourth proportional to 525,715.40, 788,342.70 and 210,067.40 is: 315,009.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,715.40 : 788,342.70 = 210,067.40 : x
  2. Step 2: Convert to fraction form
    525,715.40/788,342.70 = 210,067.40/x
  3. Step 3: Cross multiply
    525,715.40x = 788,342.70 × 210,067.40
  4. Step 4: Simplify right side
    525,715.40x = 165,605,101,297.98
  5. Step 5: Solve for x
    x = 165,605,101,297.98/525,715.40
  6. Step 6: Final answer
    x = 315,009.04

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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.