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Finding the Fourth Proportional to 229,880.72, 317,232.34 and 129,278.72

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Solution

The fourth proportional to 229,880.72, 317,232.34 and 129,278.72 is: 178,402.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,880.72 : 317,232.34 = 129,278.72 : x
  2. Step 2: Convert to fraction form
    229,880.72/317,232.34 = 129,278.72/x
  3. Step 3: Cross multiply
    229,880.72x = 317,232.34 × 129,278.72
  4. Step 4: Simplify right side
    229,880.72x = 41,011,389,271.64
  5. Step 5: Solve for x
    x = 41,011,389,271.64/229,880.72
  6. Step 6: Final answer
    x = 178,402.91

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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.