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Finding the Fourth Proportional to 311,955.20, 430,498.19 and 168,715.20

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Solution

The fourth proportional to 311,955.20, 430,498.19 and 168,715.20 is: 232,826.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,955.20 : 430,498.19 = 168,715.20 : x
  2. Step 2: Convert to fraction form
    311,955.20/430,498.19 = 168,715.20/x
  3. Step 3: Cross multiply
    311,955.20x = 430,498.19 × 168,715.20
  4. Step 4: Simplify right side
    311,955.20x = 72,631,587,381.91
  5. Step 5: Solve for x
    x = 72,631,587,381.91/311,955.20
  6. Step 6: Final answer
    x = 232,826.98

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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.