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Finding the Fourth Proportional to 343,302.70, 514,954.05 and 156,678.70

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Solution

The fourth proportional to 343,302.70, 514,954.05 and 156,678.70 is: 235,018.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,302.70 : 514,954.05 = 156,678.70 : x
  2. Step 2: Convert to fraction form
    343,302.70/514,954.05 = 156,678.70/x
  3. Step 3: Cross multiply
    343,302.70x = 514,954.05 × 156,678.70
  4. Step 4: Simplify right side
    343,302.70x = 80,682,331,113.74
  5. Step 5: Solve for x
    x = 80,682,331,113.74/343,302.70
  6. Step 6: Final answer
    x = 235,018.05

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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.