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Finding the Fourth Proportional to 357,931, 536,899.74 and 108,613

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Solution

The fourth proportional to 357,931, 536,899.74 and 108,613 is: 162,920.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,931 : 536,899.74 = 108,613 : x
  2. Step 2: Convert to fraction form
    357,931/536,899.74 = 108,613/x
  3. Step 3: Cross multiply
    357,931x = 536,899.74 × 108,613
  4. Step 4: Simplify right side
    357,931x = 58,314,291,460.62
  5. Step 5: Solve for x
    x = 58,314,291,460.62/357,931
  6. Step 6: Final answer
    x = 162,920.48

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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.