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Finding the Fourth Proportional to 561,765.84, 775,239.60 and 307,117.04

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Solution

The fourth proportional to 561,765.84, 775,239.60 and 307,117.04 is: 423,823.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,765.84 : 775,239.60 = 307,117.04 : x
  2. Step 2: Convert to fraction form
    561,765.84/775,239.60 = 307,117.04/x
  3. Step 3: Cross multiply
    561,765.84x = 775,239.60 × 307,117.04
  4. Step 4: Simplify right side
    561,765.84x = 238,089,291,242.78
  5. Step 5: Solve for x
    x = 238,089,291,242.78/561,765.84
  6. Step 6: Final answer
    x = 423,823.01

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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.