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Finding the Fourth Proportional to 255,523.34, 383,308.68 and 86,987.03

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Solution

The fourth proportional to 255,523.34, 383,308.68 and 86,987.03 is: 130,488.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,523.34 : 383,308.68 = 86,987.03 : x
  2. Step 2: Convert to fraction form
    255,523.34/383,308.68 = 86,987.03/x
  3. Step 3: Cross multiply
    255,523.34x = 383,308.68 × 86,987.03
  4. Step 4: Simplify right side
    255,523.34x = 33,342,883,646.42
  5. Step 5: Solve for x
    x = 33,342,883,646.42/255,523.34
  6. Step 6: Final answer
    x = 130,488.60

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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.