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Finding the Fourth Proportional to 389,085.48, 536,937.95 and 210,237.48

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Solution

The fourth proportional to 389,085.48, 536,937.95 and 210,237.48 is: 290,127.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,085.48 : 536,937.95 = 210,237.48 : x
  2. Step 2: Convert to fraction form
    389,085.48/536,937.95 = 210,237.48/x
  3. Step 3: Cross multiply
    389,085.48x = 536,937.95 × 210,237.48
  4. Step 4: Simplify right side
    389,085.48x = 112,884,482,049.96
  5. Step 5: Solve for x
    x = 112,884,482,049.96/389,085.48
  6. Step 6: Final answer
    x = 290,127.72

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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.