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Finding the Fourth Proportional to 373,689.28, 515,702.16 and 203,934.32

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Solution

The fourth proportional to 373,689.28, 515,702.16 and 203,934.32 is: 281,435.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,689.28 : 515,702.16 = 203,934.32 : x
  2. Step 2: Convert to fraction form
    373,689.28/515,702.16 = 203,934.32/x
  3. Step 3: Cross multiply
    373,689.28x = 515,702.16 × 203,934.32
  4. Step 4: Simplify right side
    373,689.28x = 105,169,369,322.13
  5. Step 5: Solve for x
    x = 105,169,369,322.13/373,689.28
  6. Step 6: Final answer
    x = 281,435.34

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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.