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Finding the Fourth Proportional to 305,673.90, 458,328.60 and 187,430.10

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Solution

The fourth proportional to 305,673.90, 458,328.60 and 187,430.10 is: 281,033.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,673.90 : 458,328.60 = 187,430.10 : x
  2. Step 2: Convert to fraction form
    305,673.90/458,328.60 = 187,430.10/x
  3. Step 3: Cross multiply
    305,673.90x = 458,328.60 × 187,430.10
  4. Step 4: Simplify right side
    305,673.90x = 85,904,575,330.86
  5. Step 5: Solve for x
    x = 85,904,575,330.86/305,673.90
  6. Step 6: Final answer
    x = 281,033.40

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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.