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Finding the Fourth Proportional to 388,802.60, 583,434.30 and 256,063.40

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Solution

The fourth proportional to 388,802.60, 583,434.30 and 256,063.40 is: 384,246.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,802.60 : 583,434.30 = 256,063.40 : x
  2. Step 2: Convert to fraction form
    388,802.60/583,434.30 = 256,063.40/x
  3. Step 3: Cross multiply
    388,802.60x = 583,434.30 × 256,063.40
  4. Step 4: Simplify right side
    388,802.60x = 149,396,170,534.62
  5. Step 5: Solve for x
    x = 149,396,170,534.62/388,802.60
  6. Step 6: Final answer
    x = 384,246.84

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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.