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Finding the Fourth Proportional to 210,395.84, 315,596.64 and 60,638.72

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Solution

The fourth proportional to 210,395.84, 315,596.64 and 60,638.72 is: 90,958.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,395.84 : 315,596.64 = 60,638.72 : x
  2. Step 2: Convert to fraction form
    210,395.84/315,596.64 = 60,638.72/x
  3. Step 3: Cross multiply
    210,395.84x = 315,596.64 × 60,638.72
  4. Step 4: Simplify right side
    210,395.84x = 19,137,376,285.90
  5. Step 5: Solve for x
    x = 19,137,376,285.90/210,395.84
  6. Step 6: Final answer
    x = 90,958.91

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1.5x scale

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.