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Finding the Fourth Proportional to 300,289.59, 450,363.30 and 87,001.05

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Solution

The fourth proportional to 300,289.59, 450,363.30 and 87,001.05 is: 130,480.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,289.59 : 450,363.30 = 87,001.05 : x
  2. Step 2: Convert to fraction form
    300,289.59/450,363.30 = 87,001.05/x
  3. Step 3: Cross multiply
    300,289.59x = 450,363.30 × 87,001.05
  4. Step 4: Simplify right side
    300,289.59x = 39,182,079,981.47
  5. Step 5: Solve for x
    x = 39,182,079,981.47/300,289.59
  6. Step 6: Final answer
    x = 130,480.98

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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.