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Finding the Fourth Proportional to 434,587.70, 651,881.55 and 154,133.30

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Solution

The fourth proportional to 434,587.70, 651,881.55 and 154,133.30 is: 231,199.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,587.70 : 651,881.55 = 154,133.30 : x
  2. Step 2: Convert to fraction form
    434,587.70/651,881.55 = 154,133.30/x
  3. Step 3: Cross multiply
    434,587.70x = 651,881.55 × 154,133.30
  4. Step 4: Simplify right side
    434,587.70x = 100,476,654,510.62
  5. Step 5: Solve for x
    x = 100,476,654,510.62/434,587.70
  6. Step 6: Final answer
    x = 231,199.95

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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.