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Finding the Fourth Proportional to 313,707.53, 432,918.78 and 170,468.35

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Solution

The fourth proportional to 313,707.53, 432,918.78 and 170,468.35 is: 235,247.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,707.53 : 432,918.78 = 170,468.35 : x
  2. Step 2: Convert to fraction form
    313,707.53/432,918.78 = 170,468.35/x
  3. Step 3: Cross multiply
    313,707.53x = 432,918.78 × 170,468.35
  4. Step 4: Simplify right side
    313,707.53x = 73,798,948,389.06
  5. Step 5: Solve for x
    x = 73,798,948,389.06/313,707.53
  6. Step 6: Final answer
    x = 235,247.61

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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.