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Finding the Fourth Proportional to 300,287.59, 450,360.30 and 86,999.05

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Solution

The fourth proportional to 300,287.59, 450,360.30 and 86,999.05 is: 130,477.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,287.59 : 450,360.30 = 86,999.05 : x
  2. Step 2: Convert to fraction form
    300,287.59/450,360.30 = 86,999.05/x
  3. Step 3: Cross multiply
    300,287.59x = 450,360.30 × 86,999.05
  4. Step 4: Simplify right side
    300,287.59x = 39,180,916,613.64
  5. Step 5: Solve for x
    x = 39,180,916,613.64/300,287.59
  6. Step 6: Final answer
    x = 130,477.98

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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.