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Finding the Fourth Proportional to 285,566.60, 427,428.30 and 263,448.20

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Solution

The fourth proportional to 285,566.60, 427,428.30 and 263,448.20 is: 394,322.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,566.60 : 427,428.30 = 263,448.20 : x
  2. Step 2: Convert to fraction form
    285,566.60/427,428.30 = 263,448.20/x
  3. Step 3: Cross multiply
    285,566.60x = 427,428.30 × 263,448.20
  4. Step 4: Simplify right side
    285,566.60x = 112,605,216,264.06
  5. Step 5: Solve for x
    x = 112,605,216,264.06/285,566.60
  6. Step 6: Final answer
    x = 394,322.08

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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.