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Finding the Fourth Proportional to 538,239.80, 807,359.70 and 370,278.20

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Solution

The fourth proportional to 538,239.80, 807,359.70 and 370,278.20 is: 555,417.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,239.80 : 807,359.70 = 370,278.20 : x
  2. Step 2: Convert to fraction form
    538,239.80/807,359.70 = 370,278.20/x
  3. Step 3: Cross multiply
    538,239.80x = 807,359.70 × 370,278.20
  4. Step 4: Simplify right side
    538,239.80x = 298,947,696,468.54
  5. Step 5: Solve for x
    x = 298,947,696,468.54/538,239.80
  6. Step 6: Final answer
    x = 555,417.30

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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.