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Finding the Fourth Proportional to 243,470.20, 365,205.30 and 77,258.20

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Solution

The fourth proportional to 243,470.20, 365,205.30 and 77,258.20 is: 115,887.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,470.20 : 365,205.30 = 77,258.20 : x
  2. Step 2: Convert to fraction form
    243,470.20/365,205.30 = 77,258.20/x
  3. Step 3: Cross multiply
    243,470.20x = 365,205.30 × 77,258.20
  4. Step 4: Simplify right side
    243,470.20x = 28,215,104,108.46
  5. Step 5: Solve for x
    x = 28,215,104,108.46/243,470.20
  6. Step 6: Final answer
    x = 115,887.30

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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.