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Finding the Fourth Proportional to 383,987.10, 575,988.96 and 117,741.72

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Solution

The fourth proportional to 383,987.10, 575,988.96 and 117,741.72 is: 176,615.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,987.10 : 575,988.96 = 117,741.72 : x
  2. Step 2: Convert to fraction form
    383,987.10/575,988.96 = 117,741.72/x
  3. Step 3: Cross multiply
    383,987.10x = 575,988.96 × 117,741.72
  4. Step 4: Simplify right side
    383,987.10x = 67,817,930,851.41
  5. Step 5: Solve for x
    x = 67,817,930,851.41/383,987.10
  6. Step 6: Final answer
    x = 176,615.13

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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.