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Finding the Fourth Proportional to 434,461.80, 651,692.70 and 221,885.40

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Solution

The fourth proportional to 434,461.80, 651,692.70 and 221,885.40 is: 332,828.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,461.80 : 651,692.70 = 221,885.40 : x
  2. Step 2: Convert to fraction form
    434,461.80/651,692.70 = 221,885.40/x
  3. Step 3: Cross multiply
    434,461.80x = 651,692.70 × 221,885.40
  4. Step 4: Simplify right side
    434,461.80x = 144,601,095,416.58
  5. Step 5: Solve for x
    x = 144,601,095,416.58/434,461.80
  6. Step 6: Final answer
    x = 332,828.10

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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.