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Finding the Fourth Proportional to 308,173.67, 425,271.52 and 172,208.74

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Solution

The fourth proportional to 308,173.67, 425,271.52 and 172,208.74 is: 237,643.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,173.67 : 425,271.52 = 172,208.74 : x
  2. Step 2: Convert to fraction form
    308,173.67/425,271.52 = 172,208.74/x
  3. Step 3: Cross multiply
    308,173.67x = 425,271.52 × 172,208.74
  4. Step 4: Simplify right side
    308,173.67x = 73,235,470,490.73
  5. Step 5: Solve for x
    x = 73,235,470,490.73/308,173.67
  6. Step 6: Final answer
    x = 237,643.50

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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.