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Finding the Fourth Proportional to 360,278.40, 538,862.40 and 304,291.20

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Solution

The fourth proportional to 360,278.40, 538,862.40 and 304,291.20 is: 455,123.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,278.40 : 538,862.40 = 304,291.20 : x
  2. Step 2: Convert to fraction form
    360,278.40/538,862.40 = 304,291.20/x
  3. Step 3: Cross multiply
    360,278.40x = 538,862.40 × 304,291.20
  4. Step 4: Simplify right side
    360,278.40x = 163,971,086,330.88
  5. Step 5: Solve for x
    x = 163,971,086,330.88/360,278.40
  6. Step 6: Final answer
    x = 455,123.28

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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.