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Finding the Fourth Proportional to 318,430.59, 439,384.13 and 182,438.34

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Solution

The fourth proportional to 318,430.59, 439,384.13 and 182,438.34 is: 251,736.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,430.59 : 439,384.13 = 182,438.34 : x
  2. Step 2: Convert to fraction form
    318,430.59/439,384.13 = 182,438.34/x
  3. Step 3: Cross multiply
    318,430.59x = 439,384.13 × 182,438.34
  4. Step 4: Simplify right side
    318,430.59x = 80,160,510,387.35
  5. Step 5: Solve for x
    x = 80,160,510,387.35/318,430.59
  6. Step 6: Final answer
    x = 251,736.21

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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.