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Finding the Fourth Proportional to 283,026.48, 390,578.40 and 155,698.80

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Solution

The fourth proportional to 283,026.48, 390,578.40 and 155,698.80 is: 214,865.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,026.48 : 390,578.40 = 155,698.80 : x
  2. Step 2: Convert to fraction form
    283,026.48/390,578.40 = 155,698.80/x
  3. Step 3: Cross multiply
    283,026.48x = 390,578.40 × 155,698.80
  4. Step 4: Simplify right side
    283,026.48x = 60,812,588,185.92
  5. Step 5: Solve for x
    x = 60,812,588,185.92/283,026.48
  6. Step 6: Final answer
    x = 214,865.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.