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Finding the Fourth Proportional to 311,742.20, 430,206.20 and 168,501.89

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Solution

The fourth proportional to 311,742.20, 430,206.20 and 168,501.89 is: 232,533.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,742.20 : 430,206.20 = 168,501.89 : x
  2. Step 2: Convert to fraction form
    311,742.20/430,206.20 = 168,501.89/x
  3. Step 3: Cross multiply
    311,742.20x = 430,206.20 × 168,501.89
  4. Step 4: Simplify right side
    311,742.20x = 72,490,554,796.18
  5. Step 5: Solve for x
    x = 72,490,554,796.18/311,742.20
  6. Step 6: Final answer
    x = 232,533.66

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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.