Home / 285,214.74-393,601-156,151.04

Finding the Fourth Proportional to 285,214.74, 393,601 and 156,151.04

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Solution

The fourth proportional to 285,214.74, 393,601 and 156,151.04 is: 215,490.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,214.74 : 393,601 = 156,151.04 : x
  2. Step 2: Convert to fraction form
    285,214.74/393,601 = 156,151.04/x
  3. Step 3: Cross multiply
    285,214.74x = 393,601 × 156,151.04
  4. Step 4: Simplify right side
    285,214.74x = 61,461,205,495.04
  5. Step 5: Solve for x
    x = 61,461,205,495.04/285,214.74
  6. Step 6: Final answer
    x = 215,490.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.