Home / 311,427.30-429,769.64-168,187.32

Finding the Fourth Proportional to 311,427.30, 429,769.64 and 168,187.32

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Solution

The fourth proportional to 311,427.30, 429,769.64 and 168,187.32 is: 232,098.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,427.30 : 429,769.64 = 168,187.32 : x
  2. Step 2: Convert to fraction form
    311,427.30/429,769.64 = 168,187.32/x
  3. Step 3: Cross multiply
    311,427.30x = 429,769.64 × 168,187.32
  4. Step 4: Simplify right side
    311,427.30x = 72,281,803,968.96
  5. Step 5: Solve for x
    x = 72,281,803,968.96/311,427.30
  6. Step 6: Final answer
    x = 232,098.48

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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.