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Finding the Fourth Proportional to 434,520.70, 651,781.05 and 118,977.10

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Solution

The fourth proportional to 434,520.70, 651,781.05 and 118,977.10 is: 178,465.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,520.70 : 651,781.05 = 118,977.10 : x
  2. Step 2: Convert to fraction form
    434,520.70/651,781.05 = 118,977.10/x
  3. Step 3: Cross multiply
    434,520.70x = 651,781.05 × 118,977.10
  4. Step 4: Simplify right side
    434,520.70x = 77,547,019,163.96
  5. Step 5: Solve for x
    x = 77,547,019,163.96/434,520.70
  6. Step 6: Final answer
    x = 178,465.65

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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.