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Finding the Fourth Proportional to 389,354.63, 537,309.38 and 210,506.63

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Solution

The fourth proportional to 389,354.63, 537,309.38 and 210,506.63 is: 290,499.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,354.63 : 537,309.38 = 210,506.63 : x
  2. Step 2: Convert to fraction form
    389,354.63/537,309.38 = 210,506.63/x
  3. Step 3: Cross multiply
    389,354.63x = 537,309.38 × 210,506.63
  4. Step 4: Simplify right side
    389,354.63x = 113,107,184,690.91
  5. Step 5: Solve for x
    x = 113,107,184,690.91/389,354.63
  6. Step 6: Final answer
    x = 290,499.14

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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.