Home / 345,986.16-477,351-202,700.40

Finding the Fourth Proportional to 345,986.16, 477,351 and 202,700.40

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Solution

The fourth proportional to 345,986.16, 477,351 and 202,700.40 is: 279,662.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,986.16 : 477,351 = 202,700.40 : x
  2. Step 2: Convert to fraction form
    345,986.16/477,351 = 202,700.40/x
  3. Step 3: Cross multiply
    345,986.16x = 477,351 × 202,700.40
  4. Step 4: Simplify right side
    345,986.16x = 96,759,238,640.40
  5. Step 5: Solve for x
    x = 96,759,238,640.40/345,986.16
  6. Step 6: Final answer
    x = 279,662.17

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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.