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Finding the Fourth Proportional to 385,016.72, 577,579.36 and 118,798.88

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Solution

The fourth proportional to 385,016.72, 577,579.36 and 118,798.88 is: 178,215.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,016.72 : 577,579.36 = 118,798.88 : x
  2. Step 2: Convert to fraction form
    385,016.72/577,579.36 = 118,798.88/x
  3. Step 3: Cross multiply
    385,016.72x = 577,579.36 × 118,798.88
  4. Step 4: Simplify right side
    385,016.72x = 68,615,781,079.12
  5. Step 5: Solve for x
    x = 68,615,781,079.12/385,016.72
  6. Step 6: Final answer
    x = 178,215.07

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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.