Home / 306,056.16-422,420.40-192,803.04

Finding the Fourth Proportional to 306,056.16, 422,420.40 and 192,803.04

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Solution

The fourth proportional to 306,056.16, 422,420.40 and 192,803.04 is: 266,107.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,056.16 : 422,420.40 = 192,803.04 : x
  2. Step 2: Convert to fraction form
    306,056.16/422,420.40 = 192,803.04/x
  3. Step 3: Cross multiply
    306,056.16x = 422,420.40 × 192,803.04
  4. Step 4: Simplify right side
    306,056.16x = 81,443,937,278.02
  5. Step 5: Solve for x
    x = 81,443,937,278.02/306,056.16
  6. Step 6: Final answer
    x = 266,107.82

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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.