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Finding the Fourth Proportional to 395,612.36, 545,885.46 and 225,823.40

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Solution

The fourth proportional to 395,612.36, 545,885.46 and 225,823.40 is: 311,602.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,612.36 : 545,885.46 = 225,823.40 : x
  2. Step 2: Convert to fraction form
    395,612.36/545,885.46 = 225,823.40/x
  3. Step 3: Cross multiply
    395,612.36x = 545,885.46 × 225,823.40
  4. Step 4: Simplify right side
    395,612.36x = 123,273,710,587.76
  5. Step 5: Solve for x
    x = 123,273,710,587.76/395,612.36
  6. Step 6: Final answer
    x = 311,602.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.