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Finding the Fourth Proportional to 516,981, 775,527.12 and 217,492.08

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Solution

The fourth proportional to 516,981, 775,527.12 and 217,492.08 is: 326,261.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,981 : 775,527.12 = 217,492.08 : x
  2. Step 2: Convert to fraction form
    516,981/775,527.12 = 217,492.08/x
  3. Step 3: Cross multiply
    516,981x = 775,527.12 × 217,492.08
  4. Step 4: Simplify right side
    516,981x = 168,671,006,425.21
  5. Step 5: Solve for x
    x = 168,671,006,425.21/516,981
  6. Step 6: Final answer
    x = 326,261.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.