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Finding the Fourth Proportional to 306,823, 423,454.62 and 172,712.92

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Solution

The fourth proportional to 306,823, 423,454.62 and 172,712.92 is: 238,365.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,823 : 423,454.62 = 172,712.92 : x
  2. Step 2: Convert to fraction form
    306,823/423,454.62 = 172,712.92/x
  3. Step 3: Cross multiply
    306,823x = 423,454.62 × 172,712.92
  4. Step 4: Simplify right side
    306,823x = 73,136,083,907.69
  5. Step 5: Solve for x
    x = 73,136,083,907.69/306,823
  6. Step 6: Final answer
    x = 238,365.72

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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.