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Finding the Fourth Proportional to 318,352.93, 439,329.80 and 173,159.88

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Solution

The fourth proportional to 318,352.93, 439,329.80 and 173,159.88 is: 238,962.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,352.93 : 439,329.80 = 173,159.88 : x
  2. Step 2: Convert to fraction form
    318,352.93/439,329.80 = 173,159.88/x
  3. Step 3: Cross multiply
    318,352.93x = 439,329.80 × 173,159.88
  4. Step 4: Simplify right side
    318,352.93x = 76,074,296,526.96
  5. Step 5: Solve for x
    x = 76,074,296,526.96/318,352.93
  6. Step 6: Final answer
    x = 238,962.13

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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.