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Finding the Fourth Proportional to 458,495.91, 687,751.97 and 158,987.07

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Solution

The fourth proportional to 458,495.91, 687,751.97 and 158,987.07 is: 238,483.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,495.91 : 687,751.97 = 158,987.07 : x
  2. Step 2: Convert to fraction form
    458,495.91/687,751.97 = 158,987.07/x
  3. Step 3: Cross multiply
    458,495.91x = 687,751.97 × 158,987.07
  4. Step 4: Simplify right side
    458,495.91x = 109,343,669,802.09
  5. Step 5: Solve for x
    x = 109,343,669,802.09/458,495.91
  6. Step 6: Final answer
    x = 238,483.41

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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.