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Finding the Fourth Proportional to 360,011.80, 538,851.30 and 318,021.40

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Solution

The fourth proportional to 360,011.80, 538,851.30 and 318,021.40 is: 476,001.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,011.80 : 538,851.30 = 318,021.40 : x
  2. Step 2: Convert to fraction form
    360,011.80/538,851.30 = 318,021.40/x
  3. Step 3: Cross multiply
    360,011.80x = 538,851.30 × 318,021.40
  4. Step 4: Simplify right side
    360,011.80x = 171,366,244,817.82
  5. Step 5: Solve for x
    x = 171,366,244,817.82/360,011.80
  6. Step 6: Final answer
    x = 476,001.74

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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.