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Finding the Fourth Proportional to 340,502.68, 510,783.42 and 87,781.03

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Solution

The fourth proportional to 340,502.68, 510,783.42 and 87,781.03 is: 131,679.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,502.68 : 510,783.42 = 87,781.03 : x
  2. Step 2: Convert to fraction form
    340,502.68/510,783.42 = 87,781.03/x
  3. Step 3: Cross multiply
    340,502.68x = 510,783.42 × 87,781.03
  4. Step 4: Simplify right side
    340,502.68x = 44,837,094,714.52
  5. Step 5: Solve for x
    x = 44,837,094,714.52/340,502.68
  6. Step 6: Final answer
    x = 131,679.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.