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Finding the Fourth Proportional to 397,988.75, 549,234.32 and 216,710.61

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Solution

The fourth proportional to 397,988.75, 549,234.32 and 216,710.61 is: 299,066.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,988.75 : 549,234.32 = 216,710.61 : x
  2. Step 2: Convert to fraction form
    397,988.75/549,234.32 = 216,710.61/x
  3. Step 3: Cross multiply
    397,988.75x = 549,234.32 × 216,710.61
  4. Step 4: Simplify right side
    397,988.75x = 119,024,903,436.58
  5. Step 5: Solve for x
    x = 119,024,903,436.58/397,988.75
  6. Step 6: Final answer
    x = 299,066.00

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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.