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Finding the Fourth Proportional to 360,315.40, 538,917.90 and 304,328.20

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Solution

The fourth proportional to 360,315.40, 538,917.90 and 304,328.20 is: 455,178.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,315.40 : 538,917.90 = 304,328.20 : x
  2. Step 2: Convert to fraction form
    360,315.40/538,917.90 = 304,328.20/x
  3. Step 3: Cross multiply
    360,315.40x = 538,917.90 × 304,328.20
  4. Step 4: Simplify right side
    360,315.40x = 164,007,914,454.78
  5. Step 5: Solve for x
    x = 164,007,914,454.78/360,315.40
  6. Step 6: Final answer
    x = 455,178.75

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1.5x scale

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.