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Finding the Fourth Proportional to 391,389.39, 586,899.02 and 151,615.60

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Solution

The fourth proportional to 391,389.39, 586,899.02 and 151,615.60 is: 227,351.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,389.39 : 586,899.02 = 151,615.60 : x
  2. Step 2: Convert to fraction form
    391,389.39/586,899.02 = 151,615.60/x
  3. Step 3: Cross multiply
    391,389.39x = 586,899.02 × 151,615.60
  4. Step 4: Simplify right side
    391,389.39x = 88,983,044,122.22
  5. Step 5: Solve for x
    x = 88,983,044,122.22/391,389.39
  6. Step 6: Final answer
    x = 227,351.70

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1.5x scale

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.