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Finding the Fourth Proportional to 210,111.84, 315,138.06 and 60,364.98

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Solution

The fourth proportional to 210,111.84, 315,138.06 and 60,364.98 is: 90,538.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,111.84 : 315,138.06 = 60,364.98 : x
  2. Step 2: Convert to fraction form
    210,111.84/315,138.06 = 60,364.98/x
  3. Step 3: Cross multiply
    210,111.84x = 315,138.06 × 60,364.98
  4. Step 4: Simplify right side
    210,111.84x = 19,023,302,689.14
  5. Step 5: Solve for x
    x = 19,023,302,689.14/210,111.84
  6. Step 6: Final answer
    x = 90,538.94

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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.