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Finding the Fourth Proportional to 307,107.16, 423,790.36 and 169,258.71

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Solution

The fourth proportional to 307,107.16, 423,790.36 and 169,258.71 is: 233,567.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,107.16 : 423,790.36 = 169,258.71 : x
  2. Step 2: Convert to fraction form
    307,107.16/423,790.36 = 169,258.71/x
  3. Step 3: Cross multiply
    307,107.16x = 423,790.36 × 169,258.71
  4. Step 4: Simplify right side
    307,107.16x = 71,730,209,644.04
  5. Step 5: Solve for x
    x = 71,730,209,644.04/307,107.16
  6. Step 6: Final answer
    x = 233,567.36

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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.