Home / 283,009.04-390,549.68-155,684.80

Finding the Fourth Proportional to 283,009.04, 390,549.68 and 155,684.80

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Solution

The fourth proportional to 283,009.04, 390,549.68 and 155,684.80 is: 214,843.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,009.04 : 390,549.68 = 155,684.80 : x
  2. Step 2: Convert to fraction form
    283,009.04/390,549.68 = 155,684.80/x
  3. Step 3: Cross multiply
    283,009.04x = 390,549.68 × 155,684.80
  4. Step 4: Simplify right side
    283,009.04x = 60,802,648,820.86
  5. Step 5: Solve for x
    x = 60,802,648,820.86/283,009.04
  6. Step 6: Final answer
    x = 214,843.49

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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.