Home / 318,663.12-439,770.96-175,421.64

Finding the Fourth Proportional to 318,663.12, 439,770.96 and 175,421.64

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Solution

The fourth proportional to 318,663.12, 439,770.96 and 175,421.64 is: 242,090.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,663.12 : 439,770.96 = 175,421.64 : x
  2. Step 2: Convert to fraction form
    318,663.12/439,770.96 = 175,421.64/x
  3. Step 3: Cross multiply
    318,663.12x = 439,770.96 × 175,421.64
  4. Step 4: Simplify right side
    318,663.12x = 77,145,343,027.57
  5. Step 5: Solve for x
    x = 77,145,343,027.57/318,663.12
  6. Step 6: Final answer
    x = 242,090.59

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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.