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Finding the Fourth Proportional to 317,609.58, 438,301.98 and 174,378.87

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Solution

The fourth proportional to 317,609.58, 438,301.98 and 174,378.87 is: 240,643.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,609.58 : 438,301.98 = 174,378.87 : x
  2. Step 2: Convert to fraction form
    317,609.58/438,301.98 = 174,378.87/x
  3. Step 3: Cross multiply
    317,609.58x = 438,301.98 × 174,378.87
  4. Step 4: Simplify right side
    317,609.58x = 76,430,603,991.16
  5. Step 5: Solve for x
    x = 76,430,603,991.16/317,609.58
  6. Step 6: Final answer
    x = 240,643.26

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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.