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Finding the Fourth Proportional to 397,841.40, 549,020.58 and 216,552.76

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Solution

The fourth proportional to 397,841.40, 549,020.58 and 216,552.76 is: 298,842.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,841.40 : 549,020.58 = 216,552.76 : x
  2. Step 2: Convert to fraction form
    397,841.40/549,020.58 = 216,552.76/x
  3. Step 3: Cross multiply
    397,841.40x = 549,020.58 × 216,552.76
  4. Step 4: Simplify right side
    397,841.40x = 118,891,921,895.80
  5. Step 5: Solve for x
    x = 118,891,921,895.80/397,841.40
  6. Step 6: Final answer
    x = 298,842.51

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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.