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Finding the Fourth Proportional to 319,848.94, 480,004.90 and 125,130.84

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Solution

The fourth proportional to 319,848.94, 480,004.90 and 125,130.84 is: 187,786.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,848.94 : 480,004.90 = 125,130.84 : x
  2. Step 2: Convert to fraction form
    319,848.94/480,004.90 = 125,130.84/x
  3. Step 3: Cross multiply
    319,848.94x = 480,004.90 × 125,130.84
  4. Step 4: Simplify right side
    319,848.94x = 60,063,416,341.12
  5. Step 5: Solve for x
    x = 60,063,416,341.12/319,848.94
  6. Step 6: Final answer
    x = 187,786.82

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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.