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Finding the Fourth Proportional to 247,335.80, 370,566.30 and 209,719.40

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Solution

The fourth proportional to 247,335.80, 370,566.30 and 209,719.40 is: 314,208.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,335.80 : 370,566.30 = 209,719.40 : x
  2. Step 2: Convert to fraction form
    247,335.80/370,566.30 = 209,719.40/x
  3. Step 3: Cross multiply
    247,335.80x = 370,566.30 × 209,719.40
  4. Step 4: Simplify right side
    247,335.80x = 77,714,942,096.22
  5. Step 5: Solve for x
    x = 77,714,942,096.22/247,335.80
  6. Step 6: Final answer
    x = 314,208.22

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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.