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Finding the Fourth Proportional to 317,729.34, 438,474.12 and 174,492.47

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Solution

The fourth proportional to 317,729.34, 438,474.12 and 174,492.47 is: 240,803.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,729.34 : 438,474.12 = 174,492.47 : x
  2. Step 2: Convert to fraction form
    317,729.34/438,474.12 = 174,492.47/x
  3. Step 3: Cross multiply
    317,729.34x = 438,474.12 × 174,492.47
  4. Step 4: Simplify right side
    317,729.34x = 76,510,430,037.51
  5. Step 5: Solve for x
    x = 76,510,430,037.51/317,729.34
  6. Step 6: Final answer
    x = 240,803.79

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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.