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Finding the Fourth Proportional to 389,532.12, 537,552.06 and 217,440.12

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Solution

The fourth proportional to 389,532.12, 537,552.06 and 217,440.12 is: 300,066.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,532.12 : 537,552.06 = 217,440.12 : x
  2. Step 2: Convert to fraction form
    389,532.12/537,552.06 = 217,440.12/x
  3. Step 3: Cross multiply
    389,532.12x = 537,552.06 × 217,440.12
  4. Step 4: Simplify right side
    389,532.12x = 116,885,384,432.65
  5. Step 5: Solve for x
    x = 116,885,384,432.65/389,532.12
  6. Step 6: Final answer
    x = 300,066.10

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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.