Home / 310,740.12-428,556.78-262,577.40

Finding the Fourth Proportional to 310,740.12, 428,556.78 and 262,577.40

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Solution

The fourth proportional to 310,740.12, 428,556.78 and 262,577.40 is: 362,133.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,740.12 : 428,556.78 = 262,577.40 : x
  2. Step 2: Convert to fraction form
    310,740.12/428,556.78 = 262,577.40/x
  3. Step 3: Cross multiply
    310,740.12x = 428,556.78 × 262,577.40
  4. Step 4: Simplify right side
    310,740.12x = 112,529,325,044.77
  5. Step 5: Solve for x
    x = 112,529,325,044.77/310,740.12
  6. Step 6: Final answer
    x = 362,133.24

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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.