Home / 319,970.16-479,867.76-120,275.19

Finding the Fourth Proportional to 319,970.16, 479,867.76 and 120,275.19

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Solution

The fourth proportional to 319,970.16, 479,867.76 and 120,275.19 is: 180,379.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,970.16 : 479,867.76 = 120,275.19 : x
  2. Step 2: Convert to fraction form
    319,970.16/479,867.76 = 120,275.19/x
  3. Step 3: Cross multiply
    319,970.16x = 479,867.76 × 120,275.19
  4. Step 4: Simplify right side
    319,970.16x = 57,716,187,509.23
  5. Step 5: Solve for x
    x = 57,716,187,509.23/319,970.16
  6. Step 6: Final answer
    x = 180,379.90

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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.