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Finding the Fourth Proportional to 292,783.32, 438,863.88 and 115,265.88

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Solution

The fourth proportional to 292,783.32, 438,863.88 and 115,265.88 is: 172,776.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,783.32 : 438,863.88 = 115,265.88 : x
  2. Step 2: Convert to fraction form
    292,783.32/438,863.88 = 115,265.88/x
  3. Step 3: Cross multiply
    292,783.32x = 438,863.88 × 115,265.88
  4. Step 4: Simplify right side
    292,783.32x = 50,586,031,328.41
  5. Step 5: Solve for x
    x = 50,586,031,328.41/292,783.32
  6. Step 6: Final answer
    x = 172,776.34

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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.