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Finding the Fourth Proportional to 319,509.79, 479,364.14 and 94,871.40

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Solution

The fourth proportional to 319,509.79, 479,364.14 and 94,871.40 is: 142,336.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,509.79 : 479,364.14 = 94,871.40 : x
  2. Step 2: Convert to fraction form
    319,509.79/479,364.14 = 94,871.40/x
  3. Step 3: Cross multiply
    319,509.79x = 479,364.14 × 94,871.40
  4. Step 4: Simplify right side
    319,509.79x = 45,477,947,071.60
  5. Step 5: Solve for x
    x = 45,477,947,071.60/319,509.79
  6. Step 6: Final answer
    x = 142,336.63

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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.