Home / 319,868.17-479,802.87-83,210.47

Finding the Fourth Proportional to 319,868.17, 479,802.87 and 83,210.47

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Solution

The fourth proportional to 319,868.17, 479,802.87 and 83,210.47 is: 124,815.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,868.17 : 479,802.87 = 83,210.47 : x
  2. Step 2: Convert to fraction form
    319,868.17/479,802.87 = 83,210.47/x
  3. Step 3: Cross multiply
    319,868.17x = 479,802.87 × 83,210.47
  4. Step 4: Simplify right side
    319,868.17x = 39,924,621,120.54
  5. Step 5: Solve for x
    x = 39,924,621,120.54/319,868.17
  6. Step 6: Final answer
    x = 124,815.86

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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.