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Finding the Fourth Proportional to 304,433.20, 427,139.60 and 304,433.20

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Solution

The fourth proportional to 304,433.20, 427,139.60 and 304,433.20 is: 427,139.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,433.20 : 427,139.60 = 304,433.20 : x
  2. Step 2: Convert to fraction form
    304,433.20/427,139.60 = 304,433.20/x
  3. Step 3: Cross multiply
    304,433.20x = 427,139.60 × 304,433.20
  4. Step 4: Simplify right side
    304,433.20x = 130,035,475,274.72
  5. Step 5: Solve for x
    x = 130,035,475,274.72/304,433.20
  6. Step 6: Final answer
    x = 427,139.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.