Home / 291,913.12-402,839.94-157,777.12

Finding the Fourth Proportional to 291,913.12, 402,839.94 and 157,777.12

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Solution

The fourth proportional to 291,913.12, 402,839.94 and 157,777.12 is: 217,732.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,913.12 : 402,839.94 = 157,777.12 : x
  2. Step 2: Convert to fraction form
    291,913.12/402,839.94 = 157,777.12/x
  3. Step 3: Cross multiply
    291,913.12x = 402,839.94 × 157,777.12
  4. Step 4: Simplify right side
    291,913.12x = 63,558,925,554.17
  5. Step 5: Solve for x
    x = 63,558,925,554.17/291,913.12
  6. Step 6: Final answer
    x = 217,732.34

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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.