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Finding the Fourth Proportional to 352,001.20, 528,001.80 and 289,793.20

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Solution

The fourth proportional to 352,001.20, 528,001.80 and 289,793.20 is: 434,689.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,001.20 : 528,001.80 = 289,793.20 : x
  2. Step 2: Convert to fraction form
    352,001.20/528,001.80 = 289,793.20/x
  3. Step 3: Cross multiply
    352,001.20x = 528,001.80 × 289,793.20
  4. Step 4: Simplify right side
    352,001.20x = 153,011,331,227.76
  5. Step 5: Solve for x
    x = 153,011,331,227.76/352,001.20
  6. Step 6: Final answer
    x = 434,689.80

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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.