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Finding the Fourth Proportional to 316,665.12, 437,002.80 and 173,422.56

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Solution

The fourth proportional to 316,665.12, 437,002.80 and 173,422.56 is: 239,325.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,665.12 : 437,002.80 = 173,422.56 : x
  2. Step 2: Convert to fraction form
    316,665.12/437,002.80 = 173,422.56/x
  3. Step 3: Cross multiply
    316,665.12x = 437,002.80 × 173,422.56
  4. Step 4: Simplify right side
    316,665.12x = 75,786,144,303.17
  5. Step 5: Solve for x
    x = 75,786,144,303.17/316,665.12
  6. Step 6: Final answer
    x = 239,325.84

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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.