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Finding the Fourth Proportional to 285,511.80, 428,267.70 and 152,801.40

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Solution

The fourth proportional to 285,511.80, 428,267.70 and 152,801.40 is: 229,202.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,511.80 : 428,267.70 = 152,801.40 : x
  2. Step 2: Convert to fraction form
    285,511.80/428,267.70 = 152,801.40/x
  3. Step 3: Cross multiply
    285,511.80x = 428,267.70 × 152,801.40
  4. Step 4: Simplify right side
    285,511.80x = 65,439,904,134.78
  5. Step 5: Solve for x
    x = 65,439,904,134.78/285,511.80
  6. Step 6: Final answer
    x = 229,202.10

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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.