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Finding the Fourth Proportional to 316,113.63, 436,240.25 and 172,870.59

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Solution

The fourth proportional to 316,113.63, 436,240.25 and 172,870.59 is: 238,563.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,113.63 : 436,240.25 = 172,870.59 : x
  2. Step 2: Convert to fraction form
    316,113.63/436,240.25 = 172,870.59/x
  3. Step 3: Cross multiply
    316,113.63x = 436,240.25 × 172,870.59
  4. Step 4: Simplify right side
    316,113.63x = 75,413,110,819.06
  5. Step 5: Solve for x
    x = 75,413,110,819.06/316,113.63
  6. Step 6: Final answer
    x = 238,563.30

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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.