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Finding the Fourth Proportional to 307,904.12, 424,903.50 and 171,940.28

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Solution

The fourth proportional to 307,904.12, 424,903.50 and 171,940.28 is: 237,275.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,904.12 : 424,903.50 = 171,940.28 : x
  2. Step 2: Convert to fraction form
    307,904.12/424,903.50 = 171,940.28/x
  3. Step 3: Cross multiply
    307,904.12x = 424,903.50 × 171,940.28
  4. Step 4: Simplify right side
    307,904.12x = 73,058,026,762.98
  5. Step 5: Solve for x
    x = 73,058,026,762.98/307,904.12
  6. Step 6: Final answer
    x = 237,275.25

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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.