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Finding the Fourth Proportional to 268,859.20, 402,802.80 and 156,447.40

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Solution

The fourth proportional to 268,859.20, 402,802.80 and 156,447.40 is: 234,388.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,859.20 : 402,802.80 = 156,447.40 : x
  2. Step 2: Convert to fraction form
    268,859.20/402,802.80 = 156,447.40/x
  3. Step 3: Cross multiply
    268,859.20x = 402,802.80 × 156,447.40
  4. Step 4: Simplify right side
    268,859.20x = 63,017,450,772.72
  5. Step 5: Solve for x
    x = 63,017,450,772.72/268,859.20
  6. Step 6: Final answer
    x = 234,388.30

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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.