Home / 306,312.72-422,715.24-172,173.84

Finding the Fourth Proportional to 306,312.72, 422,715.24 and 172,173.84

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Solution

The fourth proportional to 306,312.72, 422,715.24 and 172,173.84 is: 237,601.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,312.72 : 422,715.24 = 172,173.84 : x
  2. Step 2: Convert to fraction form
    306,312.72/422,715.24 = 172,173.84/x
  3. Step 3: Cross multiply
    306,312.72x = 422,715.24 × 172,173.84
  4. Step 4: Simplify right side
    306,312.72x = 72,780,506,097.32
  5. Step 5: Solve for x
    x = 72,780,506,097.32/306,312.72
  6. Step 6: Final answer
    x = 237,601.97

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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.