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Finding the Fourth Proportional to 316,686.76, 437,027.88 and 173,455.84

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Solution

The fourth proportional to 316,686.76, 437,027.88 and 173,455.84 is: 239,369.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,686.76 : 437,027.88 = 173,455.84 : x
  2. Step 2: Convert to fraction form
    316,686.76/437,027.88 = 173,455.84/x
  3. Step 3: Cross multiply
    316,686.76x = 437,027.88 × 173,455.84
  4. Step 4: Simplify right side
    316,686.76x = 75,805,038,028.82
  5. Step 5: Solve for x
    x = 75,805,038,028.82/316,686.76
  6. Step 6: Final answer
    x = 239,369.14

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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.