Home / 387,942.12-535,433.64-242,815.24

Finding the Fourth Proportional to 387,942.12, 535,433.64 and 242,815.24

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Solution

The fourth proportional to 387,942.12, 535,433.64 and 242,815.24 is: 335,131.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,942.12 : 535,433.64 = 242,815.24 : x
  2. Step 2: Convert to fraction form
    387,942.12/535,433.64 = 242,815.24/x
  3. Step 3: Cross multiply
    387,942.12x = 535,433.64 × 242,815.24
  4. Step 4: Simplify right side
    387,942.12x = 130,011,447,800.67
  5. Step 5: Solve for x
    x = 130,011,447,800.67/387,942.12
  6. Step 6: Final answer
    x = 335,131.04

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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.