Home / 262,646.20-393,710.10-129,417.40

Finding the Fourth Proportional to 262,646.20, 393,710.10 and 129,417.40

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Solution

The fourth proportional to 262,646.20, 393,710.10 and 129,417.40 is: 193,998.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,646.20 : 393,710.10 = 129,417.40 : x
  2. Step 2: Convert to fraction form
    262,646.20/393,710.10 = 129,417.40/x
  3. Step 3: Cross multiply
    262,646.20x = 393,710.10 × 129,417.40
  4. Step 4: Simplify right side
    262,646.20x = 50,952,937,495.74
  5. Step 5: Solve for x
    x = 50,952,937,495.74/262,646.20
  6. Step 6: Final answer
    x = 193,998.38

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1.5x scale

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.