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Finding the Fourth Proportional to 615,320.40, 849,184.78 and 343,441.33

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Solution

The fourth proportional to 615,320.40, 849,184.78 and 343,441.33 is: 473,972.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,320.40 : 849,184.78 = 343,441.33 : x
  2. Step 2: Convert to fraction form
    615,320.40/849,184.78 = 343,441.33/x
  3. Step 3: Cross multiply
    615,320.40x = 849,184.78 × 343,441.33
  4. Step 4: Simplify right side
    615,320.40x = 291,645,150,258.96
  5. Step 5: Solve for x
    x = 291,645,150,258.96/615,320.40
  6. Step 6: Final answer
    x = 473,972.83

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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.