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Finding the Fourth Proportional to 610,438.32, 915,362.01 and 210,938.94

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Solution

The fourth proportional to 610,438.32, 915,362.01 and 210,938.94 is: 316,306.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,438.32 : 915,362.01 = 210,938.94 : x
  2. Step 2: Convert to fraction form
    610,438.32/915,362.01 = 210,938.94/x
  3. Step 3: Cross multiply
    610,438.32x = 915,362.01 × 210,938.94
  4. Step 4: Simplify right side
    610,438.32x = 193,085,492,105.67
  5. Step 5: Solve for x
    x = 193,085,492,105.67/610,438.32
  6. Step 6: Final answer
    x = 316,306.31

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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.