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Finding the Fourth Proportional to 561,807.70, 775,297.88 and 307,158.89

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Solution

The fourth proportional to 561,807.70, 775,297.88 and 307,158.89 is: 423,881.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,807.70 : 775,297.88 = 307,158.89 : x
  2. Step 2: Convert to fraction form
    561,807.70/775,297.88 = 307,158.89/x
  3. Step 3: Cross multiply
    561,807.70x = 775,297.88 × 307,158.89
  4. Step 4: Simplify right side
    561,807.70x = 238,139,631,979.72
  5. Step 5: Solve for x
    x = 238,139,631,979.72/561,807.70
  6. Step 6: Final answer
    x = 423,881.04

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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.