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Finding the Fourth Proportional to 317,715.76, 438,449.22 and 181,751.20

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Solution

The fourth proportional to 317,715.76, 438,449.22 and 181,751.20 is: 250,817.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,715.76 : 438,449.22 = 181,751.20 : x
  2. Step 2: Convert to fraction form
    317,715.76/438,449.22 = 181,751.20/x
  3. Step 3: Cross multiply
    317,715.76x = 438,449.22 × 181,751.20
  4. Step 4: Simplify right side
    317,715.76x = 79,688,671,874.06
  5. Step 5: Solve for x
    x = 79,688,671,874.06/317,715.76
  6. Step 6: Final answer
    x = 250,817.50

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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.