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Finding the Fourth Proportional to 561,763.84, 775,236.84 and 307,115.03

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Solution

The fourth proportional to 561,763.84, 775,236.84 and 307,115.03 is: 423,820.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,763.84 : 775,236.84 = 307,115.03 : x
  2. Step 2: Convert to fraction form
    561,763.84/775,236.84 = 307,115.03/x
  3. Step 3: Cross multiply
    561,763.84x = 775,236.84 × 307,115.03
  4. Step 4: Simplify right side
    561,763.84x = 238,086,885,373.71
  5. Step 5: Solve for x
    x = 238,086,885,373.71/561,763.84
  6. Step 6: Final answer
    x = 423,820.24

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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.