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Finding the Fourth Proportional to 525,713.80, 787,404.30 and 210,008.20

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Solution

The fourth proportional to 525,713.80, 787,404.30 and 210,008.20 is: 314,546.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,713.80 : 787,404.30 = 210,008.20 : x
  2. Step 2: Convert to fraction form
    525,713.80/787,404.30 = 210,008.20/x
  3. Step 3: Cross multiply
    525,713.80x = 787,404.30 × 210,008.20
  4. Step 4: Simplify right side
    525,713.80x = 165,361,359,715.26
  5. Step 5: Solve for x
    x = 165,361,359,715.26/525,713.80
  6. Step 6: Final answer
    x = 314,546.36

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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.