Home / 285,240.64-393,617.08-156,154.36

Finding the Fourth Proportional to 285,240.64, 393,617.08 and 156,154.36

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Solution

The fourth proportional to 285,240.64, 393,617.08 and 156,154.36 is: 215,484.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,240.64 : 393,617.08 = 156,154.36 : x
  2. Step 2: Convert to fraction form
    285,240.64/393,617.08 = 156,154.36/x
  3. Step 3: Cross multiply
    285,240.64x = 393,617.08 × 156,154.36
  4. Step 4: Simplify right side
    285,240.64x = 61,465,023,212.47
  5. Step 5: Solve for x
    x = 61,465,023,212.47/285,240.64
  6. Step 6: Final answer
    x = 215,484.80

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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.