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Finding the Fourth Proportional to 340,804.80, 511,207.20 and 127,572.30

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Solution

The fourth proportional to 340,804.80, 511,207.20 and 127,572.30 is: 191,358.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,804.80 : 511,207.20 = 127,572.30 : x
  2. Step 2: Convert to fraction form
    340,804.80/511,207.20 = 127,572.30/x
  3. Step 3: Cross multiply
    340,804.80x = 511,207.20 × 127,572.30
  4. Step 4: Simplify right side
    340,804.80x = 65,215,878,280.56
  5. Step 5: Solve for x
    x = 65,215,878,280.56/340,804.80
  6. Step 6: Final answer
    x = 191,358.45

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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.