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Finding the Fourth Proportional to 615,145.77, 848,966.81 and 343,308.15

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Solution

The fourth proportional to 615,145.77, 848,966.81 and 343,308.15 is: 473,801.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,145.77 : 848,966.81 = 343,308.15 : x
  2. Step 2: Convert to fraction form
    615,145.77/848,966.81 = 343,308.15/x
  3. Step 3: Cross multiply
    615,145.77x = 848,966.81 × 343,308.15
  4. Step 4: Simplify right side
    615,145.77x = 291,457,223,235.96
  5. Step 5: Solve for x
    x = 291,457,223,235.96/615,145.77
  6. Step 6: Final answer
    x = 473,801.88

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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.