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Finding the Fourth Proportional to 525,710.60, 788,760.30 and 210,393.80

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Solution

The fourth proportional to 525,710.60, 788,760.30 and 210,393.80 is: 315,668.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,710.60 : 788,760.30 = 210,393.80 : x
  2. Step 2: Convert to fraction form
    525,710.60/788,760.30 = 210,393.80/x
  3. Step 3: Cross multiply
    525,710.60x = 788,760.30 × 210,393.80
  4. Step 4: Simplify right side
    525,710.60x = 165,950,276,806.14
  5. Step 5: Solve for x
    x = 165,950,276,806.14/525,710.60
  6. Step 6: Final answer
    x = 315,668.50

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1.5x scale

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.