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Finding the Fourth Proportional to 313,478.72, 432,588.72 and 170,235.68

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Solution

The fourth proportional to 313,478.72, 432,588.72 and 170,235.68 is: 234,918.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,478.72 : 432,588.72 = 170,235.68 : x
  2. Step 2: Convert to fraction form
    313,478.72/432,588.72 = 170,235.68/x
  3. Step 3: Cross multiply
    313,478.72x = 432,588.72 × 170,235.68
  4. Step 4: Simplify right side
    313,478.72x = 73,642,034,909.53
  5. Step 5: Solve for x
    x = 73,642,034,909.53/313,478.72
  6. Step 6: Final answer
    x = 234,918.77

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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.