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Finding the Fourth Proportional to 287,072.20, 429,830.70 and 224,864.20

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Solution

The fourth proportional to 287,072.20, 429,830.70 and 224,864.20 is: 336,687.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,072.20 : 429,830.70 = 224,864.20 : x
  2. Step 2: Convert to fraction form
    287,072.20/429,830.70 = 224,864.20/x
  3. Step 3: Cross multiply
    287,072.20x = 429,830.70 × 224,864.20
  4. Step 4: Simplify right side
    287,072.20x = 96,653,536,490.94
  5. Step 5: Solve for x
    x = 96,653,536,490.94/287,072.20
  6. Step 6: Final answer
    x = 336,687.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.