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Finding the Fourth Proportional to 235,479.12, 353,215.44 and 57,987.60

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Solution

The fourth proportional to 235,479.12, 353,215.44 and 57,987.60 is: 86,980.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,479.12 : 353,215.44 = 57,987.60 : x
  2. Step 2: Convert to fraction form
    235,479.12/353,215.44 = 57,987.60/x
  3. Step 3: Cross multiply
    235,479.12x = 353,215.44 × 57,987.60
  4. Step 4: Simplify right side
    235,479.12x = 20,482,115,648.54
  5. Step 5: Solve for x
    x = 20,482,115,648.54/235,479.12
  6. Step 6: Final answer
    x = 86,980.60

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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.