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Finding the Fourth Proportional to 507,663.40, 700,575.44 and 281,308.90

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Solution

The fourth proportional to 507,663.40, 700,575.44 and 281,308.90 is: 388,206.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,663.40 : 700,575.44 = 281,308.90 : x
  2. Step 2: Convert to fraction form
    507,663.40/700,575.44 = 281,308.90/x
  3. Step 3: Cross multiply
    507,663.40x = 700,575.44 × 281,308.90
  4. Step 4: Simplify right side
    507,663.40x = 197,078,106,393.42
  5. Step 5: Solve for x
    x = 197,078,106,393.42/507,663.40
  6. Step 6: Final answer
    x = 388,206.25

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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.