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Finding the Fourth Proportional to 210,937.65, 290,819.13 and 134,428.83

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Solution

The fourth proportional to 210,937.65, 290,819.13 and 134,428.83 is: 185,336.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,937.65 : 290,819.13 = 134,428.83 : x
  2. Step 2: Convert to fraction form
    210,937.65/290,819.13 = 134,428.83/x
  3. Step 3: Cross multiply
    210,937.65x = 290,819.13 × 134,428.83
  4. Step 4: Simplify right side
    210,937.65x = 39,094,475,387.52
  5. Step 5: Solve for x
    x = 39,094,475,387.52/210,937.65
  6. Step 6: Final answer
    x = 185,336.64

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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.