Home / 283,145.65-390,740.76-155,821.23

Finding the Fourth Proportional to 283,145.65, 390,740.76 and 155,821.23

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Solution

The fourth proportional to 283,145.65, 390,740.76 and 155,821.23 is: 215,033.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,145.65 : 390,740.76 = 155,821.23 : x
  2. Step 2: Convert to fraction form
    283,145.65/390,740.76 = 155,821.23/x
  3. Step 3: Cross multiply
    283,145.65x = 390,740.76 × 155,821.23
  4. Step 4: Simplify right side
    283,145.65x = 60,885,705,834.33
  5. Step 5: Solve for x
    x = 60,885,705,834.33/283,145.65
  6. Step 6: Final answer
    x = 215,033.17

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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.