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Finding the Fourth Proportional to 427,172.32, 589,311.12 and 245,844.64

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Solution

The fourth proportional to 427,172.32, 589,311.12 and 245,844.64 is: 339,158.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,172.32 : 589,311.12 = 245,844.64 : x
  2. Step 2: Convert to fraction form
    427,172.32/589,311.12 = 245,844.64/x
  3. Step 3: Cross multiply
    427,172.32x = 589,311.12 × 245,844.64
  4. Step 4: Simplify right side
    427,172.32x = 144,878,980,144.40
  5. Step 5: Solve for x
    x = 144,878,980,144.40/427,172.32
  6. Step 6: Final answer
    x = 339,158.16

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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.