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Finding the Fourth Proportional to 398,018.84, 549,258.11 and 216,732.93

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Solution

The fourth proportional to 398,018.84, 549,258.11 and 216,732.93 is: 299,087.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,018.84 : 549,258.11 = 216,732.93 : x
  2. Step 2: Convert to fraction form
    398,018.84/549,258.11 = 216,732.93/x
  3. Step 3: Cross multiply
    398,018.84x = 549,258.11 × 216,732.93
  4. Step 4: Simplify right side
    398,018.84x = 119,042,318,422.90
  5. Step 5: Solve for x
    x = 119,042,318,422.90/398,018.84
  6. Step 6: Final answer
    x = 299,087.15

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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.