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Finding the Fourth Proportional to 437,756.80, 656,246.40 and 260,075.20

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Solution

The fourth proportional to 437,756.80, 656,246.40 and 260,075.20 is: 389,881.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,756.80 : 656,246.40 = 260,075.20 : x
  2. Step 2: Convert to fraction form
    437,756.80/656,246.40 = 260,075.20/x
  3. Step 3: Cross multiply
    437,756.80x = 656,246.40 × 260,075.20
  4. Step 4: Simplify right side
    437,756.80x = 170,673,413,729.28
  5. Step 5: Solve for x
    x = 170,673,413,729.28/437,756.80
  6. Step 6: Final answer
    x = 389,881.81

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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.