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Finding the Fourth Proportional to 316,322.79, 436,507.17 and 173,085.63

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Solution

The fourth proportional to 316,322.79, 436,507.17 and 173,085.63 is: 238,848.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,322.79 : 436,507.17 = 173,085.63 : x
  2. Step 2: Convert to fraction form
    316,322.79/436,507.17 = 173,085.63/x
  3. Step 3: Cross multiply
    316,322.79x = 436,507.17 × 173,085.63
  4. Step 4: Simplify right side
    316,322.79x = 75,553,118,518.97
  5. Step 5: Solve for x
    x = 75,553,118,518.97/316,322.79
  6. Step 6: Final answer
    x = 238,848.17

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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.