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Finding the Fourth Proportional to 370,128, 555,150.72 and 103,898.88

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Solution

The fourth proportional to 370,128, 555,150.72 and 103,898.88 is: 155,836.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,128 : 555,150.72 = 103,898.88 : x
  2. Step 2: Convert to fraction form
    370,128/555,150.72 = 103,898.88/x
  3. Step 3: Cross multiply
    370,128x = 555,150.72 × 103,898.88
  4. Step 4: Simplify right side
    370,128x = 57,679,538,039.19
  5. Step 5: Solve for x
    x = 57,679,538,039.19/370,128
  6. Step 6: Final answer
    x = 155,836.73

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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.