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Finding the Fourth Proportional to 317,439.57, 438,071.98 and 174,212.94

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Solution

The fourth proportional to 317,439.57, 438,071.98 and 174,212.94 is: 240,416.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,439.57 : 438,071.98 = 174,212.94 : x
  2. Step 2: Convert to fraction form
    317,439.57/438,071.98 = 174,212.94/x
  3. Step 3: Cross multiply
    317,439.57x = 438,071.98 × 174,212.94
  4. Step 4: Simplify right side
    317,439.57x = 76,317,807,567.42
  5. Step 5: Solve for x
    x = 76,317,807,567.42/317,439.57
  6. Step 6: Final answer
    x = 240,416.81

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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.