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Finding the Fourth Proportional to 317,409.66, 438,045.21 and 174,170.07

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Solution

The fourth proportional to 317,409.66, 438,045.21 and 174,170.07 is: 240,365.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,409.66 : 438,045.21 = 174,170.07 : x
  2. Step 2: Convert to fraction form
    317,409.66/438,045.21 = 174,170.07/x
  3. Step 3: Cross multiply
    317,409.66x = 438,045.21 × 174,170.07
  4. Step 4: Simplify right side
    317,409.66x = 76,294,364,888.86
  5. Step 5: Solve for x
    x = 76,294,364,888.86/317,409.66
  6. Step 6: Final answer
    x = 240,365.60

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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.