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Finding the Fourth Proportional to 610,301.76, 915,492.96 and 210,981.12

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Solution

The fourth proportional to 610,301.76, 915,492.96 and 210,981.12 is: 316,485.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,301.76 : 915,492.96 = 210,981.12 : x
  2. Step 2: Convert to fraction form
    610,301.76/915,492.96 = 210,981.12/x
  3. Step 3: Cross multiply
    610,301.76x = 915,492.96 × 210,981.12
  4. Step 4: Simplify right side
    610,301.76x = 193,151,730,052.92
  5. Step 5: Solve for x
    x = 193,151,730,052.92/610,301.76
  6. Step 6: Final answer
    x = 316,485.62

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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.