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Finding the Fourth Proportional to 458,972.76, 686,984.94 and 245,206.20

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Solution

The fourth proportional to 458,972.76, 686,984.94 and 245,206.20 is: 367,021.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,972.76 : 686,984.94 = 245,206.20 : x
  2. Step 2: Convert to fraction form
    458,972.76/686,984.94 = 245,206.20/x
  3. Step 3: Cross multiply
    458,972.76x = 686,984.94 × 245,206.20
  4. Step 4: Simplify right side
    458,972.76x = 168,452,966,594.63
  5. Step 5: Solve for x
    x = 168,452,966,594.63/458,972.76
  6. Step 6: Final answer
    x = 367,021.71

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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.