Home / 257,646.20-386,495.80-89,166.22

Finding the Fourth Proportional to 257,646.20, 386,495.80 and 89,166.22

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Solution

The fourth proportional to 257,646.20, 386,495.80 and 89,166.22 is: 133,758.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,646.20 : 386,495.80 = 89,166.22 : x
  2. Step 2: Convert to fraction form
    257,646.20/386,495.80 = 89,166.22/x
  3. Step 3: Cross multiply
    257,646.20x = 386,495.80 × 89,166.22
  4. Step 4: Simplify right side
    257,646.20x = 34,462,368,342.72
  5. Step 5: Solve for x
    x = 34,462,368,342.72/257,646.20
  6. Step 6: Final answer
    x = 133,758.50

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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.