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Finding the Fourth Proportional to 319,509.40, 479,332.14 and 94,870.48

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Solution

The fourth proportional to 319,509.40, 479,332.14 and 94,870.48 is: 142,325.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,509.40 : 479,332.14 = 94,870.48 : x
  2. Step 2: Convert to fraction form
    319,509.40/479,332.14 = 94,870.48/x
  3. Step 3: Cross multiply
    319,509.40x = 479,332.14 × 94,870.48
  4. Step 4: Simplify right side
    319,509.40x = 45,474,470,201.23
  5. Step 5: Solve for x
    x = 45,474,470,201.23/319,509.40
  6. Step 6: Final answer
    x = 142,325.92

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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.