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Finding the Fourth Proportional to 296,782.79, 409,622.13 and 272,871.59

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Solution

The fourth proportional to 296,782.79, 409,622.13 and 272,871.59 is: 376,619.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,782.79 : 409,622.13 = 272,871.59 : x
  2. Step 2: Convert to fraction form
    296,782.79/409,622.13 = 272,871.59/x
  3. Step 3: Cross multiply
    296,782.79x = 409,622.13 × 272,871.59
  4. Step 4: Simplify right side
    296,782.79x = 111,774,239,864.18
  5. Step 5: Solve for x
    x = 111,774,239,864.18/296,782.79
  6. Step 6: Final answer
    x = 376,619.69

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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.