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Finding the Fourth Proportional to 312,586.32, 431,368.32 and 169,349.88

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Solution

The fourth proportional to 312,586.32, 431,368.32 and 169,349.88 is: 233,702.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,586.32 : 431,368.32 = 169,349.88 : x
  2. Step 2: Convert to fraction form
    312,586.32/431,368.32 = 169,349.88/x
  3. Step 3: Cross multiply
    312,586.32x = 431,368.32 × 169,349.88
  4. Step 4: Simplify right side
    312,586.32x = 73,052,173,227.80
  5. Step 5: Solve for x
    x = 73,052,173,227.80/312,586.32
  6. Step 6: Final answer
    x = 233,702.40

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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.