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Finding the Fourth Proportional to 389,808.38, 537,935.57 and 210,960.38

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Solution

The fourth proportional to 389,808.38, 537,935.57 and 210,960.38 is: 291,125.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,808.38 : 537,935.57 = 210,960.38 : x
  2. Step 2: Convert to fraction form
    389,808.38/537,935.57 = 210,960.38/x
  3. Step 3: Cross multiply
    389,808.38x = 537,935.57 × 210,960.38
  4. Step 4: Simplify right side
    389,808.38x = 113,483,088,518.24
  5. Step 5: Solve for x
    x = 113,483,088,518.24/389,808.38
  6. Step 6: Final answer
    x = 291,125.32

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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.