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Finding the Fourth Proportional to 316,715.98, 437,062.65 and 171,520.59

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Solution

The fourth proportional to 316,715.98, 437,062.65 and 171,520.59 is: 236,695.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,715.98 : 437,062.65 = 171,520.59 : x
  2. Step 2: Convert to fraction form
    316,715.98/437,062.65 = 171,520.59/x
  3. Step 3: Cross multiply
    316,715.98x = 437,062.65 × 171,520.59
  4. Step 4: Simplify right side
    316,715.98x = 74,965,242,599.18
  5. Step 5: Solve for x
    x = 74,965,242,599.18/316,715.98
  6. Step 6: Final answer
    x = 236,695.48

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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.