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Finding the Fourth Proportional to 427,114.30, 640,768.65 and 249,529.90

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Solution

The fourth proportional to 427,114.30, 640,768.65 and 249,529.90 is: 374,351.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,114.30 : 640,768.65 = 249,529.90 : x
  2. Step 2: Convert to fraction form
    427,114.30/640,768.65 = 249,529.90/x
  3. Step 3: Cross multiply
    427,114.30x = 640,768.65 × 249,529.90
  4. Step 4: Simplify right side
    427,114.30x = 159,890,937,157.64
  5. Step 5: Solve for x
    x = 159,890,937,157.64/427,114.30
  6. Step 6: Final answer
    x = 374,351.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.