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Finding the Fourth Proportional to 260,430, 390,684 and 94,256.88

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Solution

The fourth proportional to 260,430, 390,684 and 94,256.88 is: 141,399.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,430 : 390,684 = 94,256.88 : x
  2. Step 2: Convert to fraction form
    260,430/390,684 = 94,256.88/x
  3. Step 3: Cross multiply
    260,430x = 390,684 × 94,256.88
  4. Step 4: Simplify right side
    260,430x = 36,824,654,905.92
  5. Step 5: Solve for x
    x = 36,824,654,905.92/260,430
  6. Step 6: Final answer
    x = 141,399.44

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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.