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Finding the Fourth Proportional to 615,399.42, 849,293.88 and 343,520.28

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Solution

The fourth proportional to 615,399.42, 849,293.88 and 343,520.28 is: 474,081.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,399.42 : 849,293.88 = 343,520.28 : x
  2. Step 2: Convert to fraction form
    615,399.42/849,293.88 = 343,520.28/x
  3. Step 3: Cross multiply
    615,399.42x = 849,293.88 × 343,520.28
  4. Step 4: Simplify right side
    615,399.42x = 291,749,671,459.89
  5. Step 5: Solve for x
    x = 291,749,671,459.89/615,399.42
  6. Step 6: Final answer
    x = 474,081.81

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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.