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Finding the Fourth Proportional to 316,347.78, 474,507.82 and 91,703.32

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Solution

The fourth proportional to 316,347.78, 474,507.82 and 91,703.32 is: 137,550.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,347.78 : 474,507.82 = 91,703.32 : x
  2. Step 2: Convert to fraction form
    316,347.78/474,507.82 = 91,703.32/x
  3. Step 3: Cross multiply
    316,347.78x = 474,507.82 × 91,703.32
  4. Step 4: Simplify right side
    316,347.78x = 43,513,942,459.96
  5. Step 5: Solve for x
    x = 43,513,942,459.96/316,347.78
  6. Step 6: Final answer
    x = 137,550.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.