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Finding the Fourth Proportional to 318,357.12, 439,347.60 and 175,114.56

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Solution

The fourth proportional to 318,357.12, 439,347.60 and 175,114.56 is: 241,666.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,357.12 : 439,347.60 = 175,114.56 : x
  2. Step 2: Convert to fraction form
    318,357.12/439,347.60 = 175,114.56/x
  3. Step 3: Cross multiply
    318,357.12x = 439,347.60 × 175,114.56
  4. Step 4: Simplify right side
    318,357.12x = 76,936,161,661.06
  5. Step 5: Solve for x
    x = 76,936,161,661.06/318,357.12
  6. Step 6: Final answer
    x = 241,666.22

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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.