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Finding the Fourth Proportional to 500,646.21, 750,914.17 and 140,828.48

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Solution

The fourth proportional to 500,646.21, 750,914.17 and 140,828.48 is: 211,227.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,646.21 : 750,914.17 = 140,828.48 : x
  2. Step 2: Convert to fraction form
    500,646.21/750,914.17 = 140,828.48/x
  3. Step 3: Cross multiply
    500,646.21x = 750,914.17 × 140,828.48
  4. Step 4: Simplify right side
    500,646.21x = 105,750,097,416.99
  5. Step 5: Solve for x
    x = 105,750,097,416.99/500,646.21
  6. Step 6: Final answer
    x = 211,227.20

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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.