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Finding the Fourth Proportional to 434,075.80, 651,113.70 and 266,114.20

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Solution

The fourth proportional to 434,075.80, 651,113.70 and 266,114.20 is: 399,171.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,075.80 : 651,113.70 = 266,114.20 : x
  2. Step 2: Convert to fraction form
    434,075.80/651,113.70 = 266,114.20/x
  3. Step 3: Cross multiply
    434,075.80x = 651,113.70 × 266,114.20
  4. Step 4: Simplify right side
    434,075.80x = 173,270,601,384.54
  5. Step 5: Solve for x
    x = 173,270,601,384.54/434,075.80
  6. Step 6: Final answer
    x = 399,171.30

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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.