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Finding the Fourth Proportional to 495,276.20, 742,695.60 and 195,657.20

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Solution

The fourth proportional to 495,276.20, 742,695.60 and 195,657.20 is: 293,399.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,276.20 : 742,695.60 = 195,657.20 : x
  2. Step 2: Convert to fraction form
    495,276.20/742,695.60 = 195,657.20/x
  3. Step 3: Cross multiply
    495,276.20x = 742,695.60 × 195,657.20
  4. Step 4: Simplify right side
    495,276.20x = 145,313,741,548.32
  5. Step 5: Solve for x
    x = 145,313,741,548.32/495,276.20
  6. Step 6: Final answer
    x = 293,399.40

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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.