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Finding the Fourth Proportional to 571,834.90, 857,752.35 and 256,906.90

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Solution

The fourth proportional to 571,834.90, 857,752.35 and 256,906.90 is: 385,360.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,834.90 : 857,752.35 = 256,906.90 : x
  2. Step 2: Convert to fraction form
    571,834.90/857,752.35 = 256,906.90/x
  3. Step 3: Cross multiply
    571,834.90x = 857,752.35 × 256,906.90
  4. Step 4: Simplify right side
    571,834.90x = 220,362,497,206.22
  5. Step 5: Solve for x
    x = 220,362,497,206.22/571,834.90
  6. Step 6: Final answer
    x = 385,360.35

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Double scale
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Similar ratio
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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.