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Finding the Fourth Proportional to 282,374.19, 389,479.59 and 239,638.32

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Solution

The fourth proportional to 282,374.19, 389,479.59 and 239,638.32 is: 330,533.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,374.19 : 389,479.59 = 239,638.32 : x
  2. Step 2: Convert to fraction form
    282,374.19/389,479.59 = 239,638.32/x
  3. Step 3: Cross multiply
    282,374.19x = 389,479.59 × 239,638.32
  4. Step 4: Simplify right side
    282,374.19x = 93,334,234,621.89
  5. Step 5: Solve for x
    x = 93,334,234,621.89/282,374.19
  6. Step 6: Final answer
    x = 330,533.87

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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.