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Finding the Fourth Proportional to 508,291.76, 701,437.56 and 281,931.44

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Solution

The fourth proportional to 508,291.76, 701,437.56 and 281,931.44 is: 389,062.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,291.76 : 701,437.56 = 281,931.44 : x
  2. Step 2: Convert to fraction form
    508,291.76/701,437.56 = 281,931.44/x
  3. Step 3: Cross multiply
    508,291.76x = 701,437.56 × 281,931.44
  4. Step 4: Simplify right side
    508,291.76x = 197,757,301,360.89
  5. Step 5: Solve for x
    x = 197,757,301,360.89/508,291.76
  6. Step 6: Final answer
    x = 389,062.58

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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.