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Finding the Fourth Proportional to 423,644.70, 584,488.87 and 251,615.28

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Solution

The fourth proportional to 423,644.70, 584,488.87 and 251,615.28 is: 347,145.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,644.70 : 584,488.87 = 251,615.28 : x
  2. Step 2: Convert to fraction form
    423,644.70/584,488.87 = 251,615.28/x
  3. Step 3: Cross multiply
    423,644.70x = 584,488.87 × 251,615.28
  4. Step 4: Simplify right side
    423,644.70x = 147,066,330,681.93
  5. Step 5: Solve for x
    x = 147,066,330,681.93/423,644.70
  6. Step 6: Final answer
    x = 347,145.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.