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Finding the Fourth Proportional to 391,615.93, 586,969.28 and 148,302.33

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Solution

The fourth proportional to 391,615.93, 586,969.28 and 148,302.33 is: 222,281.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,615.93 : 586,969.28 = 148,302.33 : x
  2. Step 2: Convert to fraction form
    391,615.93/586,969.28 = 148,302.33/x
  3. Step 3: Cross multiply
    391,615.93x = 586,969.28 × 148,302.33
  4. Step 4: Simplify right side
    391,615.93x = 87,048,911,862.42
  5. Step 5: Solve for x
    x = 87,048,911,862.42/391,615.93
  6. Step 6: Final answer
    x = 222,281.34

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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.