Home / 319,618.64-479,375.63-130,071.35

Finding the Fourth Proportional to 319,618.64, 479,375.63 and 130,071.35

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Solution

The fourth proportional to 319,618.64, 479,375.63 and 130,071.35 is: 195,085.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,618.64 : 479,375.63 = 130,071.35 : x
  2. Step 2: Convert to fraction form
    319,618.64/479,375.63 = 130,071.35/x
  3. Step 3: Cross multiply
    319,618.64x = 479,375.63 × 130,071.35
  4. Step 4: Simplify right side
    319,618.64x = 62,353,032,303.97
  5. Step 5: Solve for x
    x = 62,353,032,303.97/319,618.64
  6. Step 6: Final answer
    x = 195,085.72

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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.