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Finding the Fourth Proportional to 210,240.92, 315,361.36 and 77,070.84

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Solution

The fourth proportional to 210,240.92, 315,361.36 and 77,070.84 is: 115,606.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,240.92 : 315,361.36 = 77,070.84 : x
  2. Step 2: Convert to fraction form
    210,240.92/315,361.36 = 77,070.84/x
  3. Step 3: Cross multiply
    210,240.92x = 315,361.36 × 77,070.84
  4. Step 4: Simplify right side
    210,240.92x = 24,305,164,918.74
  5. Step 5: Solve for x
    x = 24,305,164,918.74/210,240.92
  6. Step 6: Final answer
    x = 115,606.25

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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.