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Finding the Fourth Proportional to 210,534.84, 315,927.33 and 77,508.54

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Solution

The fourth proportional to 210,534.84, 315,927.33 and 77,508.54 is: 116,308.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,534.84 : 315,927.33 = 77,508.54 : x
  2. Step 2: Convert to fraction form
    210,534.84/315,927.33 = 77,508.54/x
  3. Step 3: Cross multiply
    210,534.84x = 315,927.33 × 77,508.54
  4. Step 4: Simplify right side
    210,534.84x = 24,487,066,094.40
  5. Step 5: Solve for x
    x = 24,487,066,094.40/210,534.84
  6. Step 6: Final answer
    x = 116,308.85

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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.