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Finding the Fourth Proportional to 380,702.88, 570,431.36 and 230,487.92

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Solution

The fourth proportional to 380,702.88, 570,431.36 and 230,487.92 is: 345,354.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,702.88 : 570,431.36 = 230,487.92 : x
  2. Step 2: Convert to fraction form
    380,702.88/570,431.36 = 230,487.92/x
  3. Step 3: Cross multiply
    380,702.88x = 570,431.36 × 230,487.92
  4. Step 4: Simplify right side
    380,702.88x = 131,477,537,669.17
  5. Step 5: Solve for x
    x = 131,477,537,669.17/380,702.88
  6. Step 6: Final answer
    x = 345,354.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.