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Finding the Fourth Proportional to 271,411.70, 407,117.55 and 187,430.90

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Solution

The fourth proportional to 271,411.70, 407,117.55 and 187,430.90 is: 281,146.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,411.70 : 407,117.55 = 187,430.90 : x
  2. Step 2: Convert to fraction form
    271,411.70/407,117.55 = 187,430.90/x
  3. Step 3: Cross multiply
    271,411.70x = 407,117.55 × 187,430.90
  4. Step 4: Simplify right side
    271,411.70x = 76,306,408,802.30
  5. Step 5: Solve for x
    x = 76,306,408,802.30/271,411.70
  6. Step 6: Final answer
    x = 281,146.35

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1.5x scale

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.