Home / 285,975.47-428,966.51-86,297.59

Finding the Fourth Proportional to 285,975.47, 428,966.51 and 86,297.59

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Solution

The fourth proportional to 285,975.47, 428,966.51 and 86,297.59 is: 129,447.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,975.47 : 428,966.51 = 86,297.59 : x
  2. Step 2: Convert to fraction form
    285,975.47/428,966.51 = 86,297.59/x
  3. Step 3: Cross multiply
    285,975.47x = 428,966.51 × 86,297.59
  4. Step 4: Simplify right side
    285,975.47x = 37,018,776,003.71
  5. Step 5: Solve for x
    x = 37,018,776,003.71/285,975.47
  6. Step 6: Final answer
    x = 129,447.38

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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.