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Finding the Fourth Proportional to 495,856.08, 743,798.16 and 121,878

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Solution

The fourth proportional to 495,856.08, 743,798.16 and 121,878 is: 182,820.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,856.08 : 743,798.16 = 121,878 : x
  2. Step 2: Convert to fraction form
    495,856.08/743,798.16 = 121,878/x
  3. Step 3: Cross multiply
    495,856.08x = 743,798.16 × 121,878
  4. Step 4: Simplify right side
    495,856.08x = 90,652,632,144.48
  5. Step 5: Solve for x
    x = 90,652,632,144.48/495,856.08
  6. Step 6: Final answer
    x = 182,820.45

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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.