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Finding the Fourth Proportional to 507,711.72, 700,642.20 and 281,357.28

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Solution

The fourth proportional to 507,711.72, 700,642.20 and 281,357.28 is: 388,273.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,711.72 : 700,642.20 = 281,357.28 : x
  2. Step 2: Convert to fraction form
    507,711.72/700,642.20 = 281,357.28/x
  3. Step 3: Cross multiply
    507,711.72x = 700,642.20 × 281,357.28
  4. Step 4: Simplify right side
    507,711.72x = 197,130,783,645.22
  5. Step 5: Solve for x
    x = 197,130,783,645.22/507,711.72
  6. Step 6: Final answer
    x = 388,273.06

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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.