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Finding the Fourth Proportional to 307,338.18, 424,152.09 and 171,353.76

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Solution

The fourth proportional to 307,338.18, 424,152.09 and 171,353.76 is: 236,482.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,338.18 : 424,152.09 = 171,353.76 : x
  2. Step 2: Convert to fraction form
    307,338.18/424,152.09 = 171,353.76/x
  3. Step 3: Cross multiply
    307,338.18x = 424,152.09 × 171,353.76
  4. Step 4: Simplify right side
    307,338.18x = 72,680,055,433.36
  5. Step 5: Solve for x
    x = 72,680,055,433.36/307,338.18
  6. Step 6: Final answer
    x = 236,482.35

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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.