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Finding the Fourth Proportional to 360,022.80, 539,386.20 and 285,632.40

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Solution

The fourth proportional to 360,022.80, 539,386.20 and 285,632.40 is: 427,934.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,022.80 : 539,386.20 = 285,632.40 : x
  2. Step 2: Convert to fraction form
    360,022.80/539,386.20 = 285,632.40/x
  3. Step 3: Cross multiply
    360,022.80x = 539,386.20 × 285,632.40
  4. Step 4: Simplify right side
    360,022.80x = 154,066,174,832.88
  5. Step 5: Solve for x
    x = 154,066,174,832.88/360,022.80
  6. Step 6: Final answer
    x = 427,934.49

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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.