Home / 285,214.95-393,601.30-156,151.28

Finding the Fourth Proportional to 285,214.95, 393,601.30 and 156,151.28

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Solution

The fourth proportional to 285,214.95, 393,601.30 and 156,151.28 is: 215,491.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,214.95 : 393,601.30 = 156,151.28 : x
  2. Step 2: Convert to fraction form
    285,214.95/393,601.30 = 156,151.28/x
  3. Step 3: Cross multiply
    285,214.95x = 393,601.30 × 156,151.28
  4. Step 4: Simplify right side
    285,214.95x = 61,461,344,446.28
  5. Step 5: Solve for x
    x = 61,461,344,446.28/285,214.95
  6. Step 6: Final answer
    x = 215,491.31

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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.