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Finding the Fourth Proportional to 308,088.10, 424,934.13 and 194,801.50

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Solution

The fourth proportional to 308,088.10, 424,934.13 and 194,801.50 is: 268,682.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,088.10 : 424,934.13 = 194,801.50 : x
  2. Step 2: Convert to fraction form
    308,088.10/424,934.13 = 194,801.50/x
  3. Step 3: Cross multiply
    308,088.10x = 424,934.13 × 194,801.50
  4. Step 4: Simplify right side
    308,088.10x = 82,777,805,925.20
  5. Step 5: Solve for x
    x = 82,777,805,925.20/308,088.10
  6. Step 6: Final answer
    x = 268,682.26

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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.