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Finding the Fourth Proportional to 282,382.30, 389,690.90 and 153,322.32

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Solution

The fourth proportional to 282,382.30, 389,690.90 and 153,322.32 is: 211,586.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,382.30 : 389,690.90 = 153,322.32 : x
  2. Step 2: Convert to fraction form
    282,382.30/389,690.90 = 153,322.32/x
  3. Step 3: Cross multiply
    282,382.30x = 389,690.90 × 153,322.32
  4. Step 4: Simplify right side
    282,382.30x = 59,748,311,948.56
  5. Step 5: Solve for x
    x = 59,748,311,948.56/282,382.30
  6. Step 6: Final answer
    x = 211,586.60

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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.