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Finding the Fourth Proportional to 389,219.68, 537,123.18 and 210,371.68

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Solution

The fourth proportional to 389,219.68, 537,123.18 and 210,371.68 is: 290,312.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,219.68 : 537,123.18 = 210,371.68 : x
  2. Step 2: Convert to fraction form
    389,219.68/537,123.18 = 210,371.68/x
  3. Step 3: Cross multiply
    389,219.68x = 537,123.18 × 210,371.68
  4. Step 4: Simplify right side
    389,219.68x = 112,995,505,743.54
  5. Step 5: Solve for x
    x = 112,995,505,743.54/389,219.68
  6. Step 6: Final answer
    x = 290,312.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.