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Finding the Fourth Proportional to 370,478.40, 555,659.40 and 117,725.60

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Solution

The fourth proportional to 370,478.40, 555,659.40 and 117,725.60 is: 176,569.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,478.40 : 555,659.40 = 117,725.60 : x
  2. Step 2: Convert to fraction form
    370,478.40/555,659.40 = 117,725.60/x
  3. Step 3: Cross multiply
    370,478.40x = 555,659.40 × 117,725.60
  4. Step 4: Simplify right side
    370,478.40x = 65,415,336,260.64
  5. Step 5: Solve for x
    x = 65,415,336,260.64/370,478.40
  6. Step 6: Final answer
    x = 176,569.91

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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.