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Finding the Fourth Proportional to 315,699.64, 435,664.94 and 181,588.92

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Solution

The fourth proportional to 315,699.64, 435,664.94 and 181,588.92 is: 250,592.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,699.64 : 435,664.94 = 181,588.92 : x
  2. Step 2: Convert to fraction form
    315,699.64/435,664.94 = 181,588.92/x
  3. Step 3: Cross multiply
    315,699.64x = 435,664.94 × 181,588.92
  4. Step 4: Simplify right side
    315,699.64x = 79,111,925,936.46
  5. Step 5: Solve for x
    x = 79,111,925,936.46/315,699.64
  6. Step 6: Final answer
    x = 250,592.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.