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Finding the Fourth Proportional to 318,878.67, 440,052.48 and 175,638.71

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Solution

The fourth proportional to 318,878.67, 440,052.48 and 175,638.71 is: 242,381.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,878.67 : 440,052.48 = 175,638.71 : x
  2. Step 2: Convert to fraction form
    318,878.67/440,052.48 = 175,638.71/x
  3. Step 3: Cross multiply
    318,878.67x = 440,052.48 × 175,638.71
  4. Step 4: Simplify right side
    318,878.67x = 77,290,249,720.91
  5. Step 5: Solve for x
    x = 77,290,249,720.91/318,878.67
  6. Step 6: Final answer
    x = 242,381.37

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1.5x scale

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.