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Finding the Fourth Proportional to 434,501.70, 651,801.15 and 134,979.90

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Solution

The fourth proportional to 434,501.70, 651,801.15 and 134,979.90 is: 202,484.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,501.70 : 651,801.15 = 134,979.90 : x
  2. Step 2: Convert to fraction form
    434,501.70/651,801.15 = 134,979.90/x
  3. Step 3: Cross multiply
    434,501.70x = 651,801.15 × 134,979.90
  4. Step 4: Simplify right side
    434,501.70x = 87,980,054,046.89
  5. Step 5: Solve for x
    x = 87,980,054,046.89/434,501.70
  6. Step 6: Final answer
    x = 202,484.95

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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.