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Finding the Fourth Proportional to 658,488.96, 987,055.47 and 258,967.80

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Solution

The fourth proportional to 658,488.96, 987,055.47 and 258,967.80 is: 388,185.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,488.96 : 987,055.47 = 258,967.80 : x
  2. Step 2: Convert to fraction form
    658,488.96/987,055.47 = 258,967.80/x
  3. Step 3: Cross multiply
    658,488.96x = 987,055.47 × 258,967.80
  4. Step 4: Simplify right side
    658,488.96x = 255,615,583,543.87
  5. Step 5: Solve for x
    x = 255,615,583,543.87/658,488.96
  6. Step 6: Final answer
    x = 388,185.07

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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.