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Finding the Fourth Proportional to 224,642.08, 310,022.40 and 129,178.72

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Solution

The fourth proportional to 224,642.08, 310,022.40 and 129,178.72 is: 178,276.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,642.08 : 310,022.40 = 129,178.72 : x
  2. Step 2: Convert to fraction form
    224,642.08/310,022.40 = 129,178.72/x
  3. Step 3: Cross multiply
    224,642.08x = 310,022.40 × 129,178.72
  4. Step 4: Simplify right side
    224,642.08x = 40,048,296,803.33
  5. Step 5: Solve for x
    x = 40,048,296,803.33/224,642.08
  6. Step 6: Final answer
    x = 178,276.02

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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.