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Finding the Fourth Proportional to 261,144.52, 358,032.45 and 256,420.60

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Solution

The fourth proportional to 261,144.52, 358,032.45 and 256,420.60 is: 351,555.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,144.52 : 358,032.45 = 256,420.60 : x
  2. Step 2: Convert to fraction form
    261,144.52/358,032.45 = 256,420.60/x
  3. Step 3: Cross multiply
    261,144.52x = 358,032.45 × 256,420.60
  4. Step 4: Simplify right side
    261,144.52x = 91,806,895,648.47
  5. Step 5: Solve for x
    x = 91,806,895,648.47/261,144.52
  6. Step 6: Final answer
    x = 351,555.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.