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Finding the Fourth Proportional to 255,618.40, 383,600.40 and 143,298.40

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Solution

The fourth proportional to 255,618.40, 383,600.40 and 143,298.40 is: 215,044.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,618.40 : 383,600.40 = 143,298.40 : x
  2. Step 2: Convert to fraction form
    255,618.40/383,600.40 = 143,298.40/x
  3. Step 3: Cross multiply
    255,618.40x = 383,600.40 × 143,298.40
  4. Step 4: Simplify right side
    255,618.40x = 54,969,323,559.36
  5. Step 5: Solve for x
    x = 54,969,323,559.36/255,618.40
  6. Step 6: Final answer
    x = 215,044.47

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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.