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Finding the Fourth Proportional to 615,142.21, 848,895.08 and 343,193.93

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Solution

The fourth proportional to 615,142.21, 848,895.08 and 343,193.93 is: 473,606.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,142.21 : 848,895.08 = 343,193.93 : x
  2. Step 2: Convert to fraction form
    615,142.21/848,895.08 = 343,193.93/x
  3. Step 3: Cross multiply
    615,142.21x = 848,895.08 × 343,193.93
  4. Step 4: Simplify right side
    615,142.21x = 291,335,638,662.86
  5. Step 5: Solve for x
    x = 291,335,638,662.86/615,142.21
  6. Step 6: Final answer
    x = 473,606.97

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1.5x scale

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.