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Finding the Fourth Proportional to 329,835.59, 455,222.08 and 208,988.20

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Solution

The fourth proportional to 329,835.59, 455,222.08 and 208,988.20 is: 288,434.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,835.59 : 455,222.08 = 208,988.20 : x
  2. Step 2: Convert to fraction form
    329,835.59/455,222.08 = 208,988.20/x
  3. Step 3: Cross multiply
    329,835.59x = 455,222.08 × 208,988.20
  4. Step 4: Simplify right side
    329,835.59x = 95,136,042,754.16
  5. Step 5: Solve for x
    x = 95,136,042,754.16/329,835.59
  6. Step 6: Final answer
    x = 288,434.74

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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.