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Finding the Fourth Proportional to 307,502.79, 424,354.46 and 171,533.20

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Solution

The fourth proportional to 307,502.79, 424,354.46 and 171,533.20 is: 236,716.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,502.79 : 424,354.46 = 171,533.20 : x
  2. Step 2: Convert to fraction form
    307,502.79/424,354.46 = 171,533.20/x
  3. Step 3: Cross multiply
    307,502.79x = 424,354.46 × 171,533.20
  4. Step 4: Simplify right side
    307,502.79x = 72,790,878,458.07
  5. Step 5: Solve for x
    x = 72,790,878,458.07/307,502.79
  6. Step 6: Final answer
    x = 236,716.16

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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.