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Finding the Fourth Proportional to 550,983.32, 760,304.48 and 309,210.47

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Solution

The fourth proportional to 550,983.32, 760,304.48 and 309,210.47 is: 426,680.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,983.32 : 760,304.48 = 309,210.47 : x
  2. Step 2: Convert to fraction form
    550,983.32/760,304.48 = 309,210.47/x
  3. Step 3: Cross multiply
    550,983.32x = 760,304.48 × 309,210.47
  4. Step 4: Simplify right side
    550,983.32x = 235,094,103,107.47
  5. Step 5: Solve for x
    x = 235,094,103,107.47/550,983.32
  6. Step 6: Final answer
    x = 426,680.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.