Home / 356,274.08-492,283.68-280,396.16

Finding the Fourth Proportional to 356,274.08, 492,283.68 and 280,396.16

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Solution

The fourth proportional to 356,274.08, 492,283.68 and 280,396.16 is: 387,438.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,274.08 : 492,283.68 = 280,396.16 : x
  2. Step 2: Convert to fraction form
    356,274.08/492,283.68 = 280,396.16/x
  3. Step 3: Cross multiply
    356,274.08x = 492,283.68 × 280,396.16
  4. Step 4: Simplify right side
    356,274.08x = 138,034,453,502.67
  5. Step 5: Solve for x
    x = 138,034,453,502.67/356,274.08
  6. Step 6: Final answer
    x = 387,438.94

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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.