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Finding the Fourth Proportional to 315,707.94, 435,683.34 and 172,477.17

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Solution

The fourth proportional to 315,707.94, 435,683.34 and 172,477.17 is: 238,021.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,707.94 : 435,683.34 = 172,477.17 : x
  2. Step 2: Convert to fraction form
    315,707.94/435,683.34 = 172,477.17/x
  3. Step 3: Cross multiply
    315,707.94x = 435,683.34 × 172,477.17
  4. Step 4: Simplify right side
    315,707.94x = 75,145,429,499.35
  5. Step 5: Solve for x
    x = 75,145,429,499.35/315,707.94
  6. Step 6: Final answer
    x = 238,021.98

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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.