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Finding the Fourth Proportional to 210,492.45, 315,518.13 and 98,079.93

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Solution

The fourth proportional to 210,492.45, 315,518.13 and 98,079.93 is: 147,017.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,492.45 : 315,518.13 = 98,079.93 : x
  2. Step 2: Convert to fraction form
    210,492.45/315,518.13 = 98,079.93/x
  3. Step 3: Cross multiply
    210,492.45x = 315,518.13 × 98,079.93
  4. Step 4: Simplify right side
    210,492.45x = 30,945,996,104.13
  5. Step 5: Solve for x
    x = 30,945,996,104.13/210,492.45
  6. Step 6: Final answer
    x = 147,017.13

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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.